{"title":"Trigonometry","description":"\u003cp\u003eTrigonometry programs for trig help. Be sure to check whether you want a formula or solver program.\u003c\/p\u003e","products":[{"product_id":"ti84-plus-ce-trigonometric-identities-program","title":"Trigonometric Identities Reference (TI-84 Plus CE)","description":"\u003ch2 style=\"color: #004d40; font-weight: 800; font-size: 2em; text-align: center; padding-bottom: 10px;\"\u003eTrigonometric Identities Reference (TI-84 Plus CE)\u003c\/h2\u003e\n\n\u003cp style=\"color: #2b6cb0; font-weight: bold; font-size: 1.15em; text-align: center; margin-bottom: 20px;\"\u003e📐 40+ Trig Identities — Organized for Fast Calculator Lookup\u003c\/p\u003e\n\n\u003cdiv style=\"max-width: 800px; margin: 0 auto;\"\u003e\n\n  \u003ca href=\"https:\/\/www.youtube.com\/watch?v=bqWyLuz01as\" target=\"_blank\" rel=\"noopener\" style=\"display: block; text-decoration: none;\"\u003e\n    \u003cdiv style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; margin: 18px 0; cursor: pointer; background: #000; border-radius: 10px; box-shadow: 0 4px 12px rgba(0,0,0,0.15);\"\u003e\n      \u003cimg src=\"https:\/\/img.youtube.com\/vi\/bqWyLuz01as\/hqdefault.jpg\" alt=\"Trigonometric Identities Program Demo\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover;\" loading=\"lazy\"\u003e\n      \u003cdiv style=\"position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); background: rgba(0,0,0,0.75); border-radius: 50%; width: 64px; height: 64px; display: flex; align-items: center; justify-content: center;\"\u003e\n        \u003cdiv style=\"width: 0; height: 0; border-left: 22px solid #fff; border-top: 13px solid transparent; border-bottom: 13px solid transparent; margin-left: 5px;\"\u003e\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cp style=\"position: absolute; bottom: 10px; left: 10px; color: white; background: rgba(0,0,0,0.7); padding: 5px 10px; border-radius: 4px; margin: 0; font-size: 14px;\"\u003e▶️ Watch: Trig Identities Demo\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/a\u003e\n\n  \u003cp style=\"font-size: 1.1em; line-height: 1.7; color: #333;\"\u003e\u003cstrong\u003eKeep 40+ trig identities inside your calculator.\u003c\/strong\u003e TRIGID2 is a reference program for TI-84 Plus CE that organizes the identities students use most often in Trigonometry, Precalculus, and Calculus into quick-access calculator menus. Less time hunting through notes, more time working through problems.\u003c\/p\u003e\n\n  \u003ch3 style=\"color: #004d40; font-size: 1.45em; margin: 26px 0 12px;\"\u003eWhat's Included\u003c\/h3\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 28px; font-size: 0.94em;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background-color: #004d40; color: white;\"\u003e\n        \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eFile Name\u003c\/th\u003e\n        \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eType\u003c\/th\u003e\n        \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eWhat It Does\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd; font-weight: bold;\"\u003eTRIGID2\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eReference Program\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e40+ trigonometric identities organized in calculator menus. Covers Pythagorean identities, reciprocal and quotient identities, co-function identities, even\/odd (negative-angle) identities, sum and difference formulas, double-angle formulas, half-angle formulas, and product-to-sum identities.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003cdiv style=\"background: #f0f9f6; padding: 20px; border-radius: 12px; border: 1px solid #b2dfdb; margin: 25px 0;\"\u003e\n    \u003ch3 style=\"color: #004d40; margin-top: 0; font-size: 1.3em;\"\u003eIdentity categories included:\u003c\/h3\u003e\n    \u003cul style=\"margin: 10px 0 0 20px; line-height: 1.8; color: #004d40; font-weight: bold;\"\u003e\n      \u003cli\u003e✅ Pythagorean identities\u003c\/li\u003e\n      \u003cli\u003e✅ Reciprocal and quotient identities\u003c\/li\u003e\n      \u003cli\u003e✅ Co-function identities\u003c\/li\u003e\n      \u003cli\u003e✅ Even\/odd (negative-angle) identities\u003c\/li\u003e\n      \u003cli\u003e✅ Sum and difference formulas\u003c\/li\u003e\n      \u003cli\u003e✅ Double-angle formulas\u003c\/li\u003e\n      \u003cli\u003e✅ Half-angle formulas\u003c\/li\u003e\n      \u003cli\u003e✅ Product-to-sum identities\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background: #f8fffb; padding: 18px 20px; border-left: 4px solid #2e7d32; margin: 20px 0;\"\u003e\n    \u003cp style=\"margin: 0; line-height: 1.7;\"\u003eThis is a \u003cstrong\u003ereference program, not a solver\u003c\/strong\u003e — designed to reduce memorization pressure and make it easier to find the right identity during homework, practice problems, and test prep. \u003cstrong\u003eBest for:\u003c\/strong\u003e Trigonometry students, Precalculus students, students preparing for Calculus, and anyone who wants a cleaner trig identity reference on their calculator.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 28px;\"\u003e\n    \u003cdiv style=\"border: 1px solid #ddd; padding: 15px; border-radius: 10px;\"\u003e\n      \u003ch4 style=\"margin-top: 0; color: #004d40;\"\u003eCompatible Calculators\u003c\/h4\u003e\n      \u003cp style=\"font-size: 0.95em; margin-bottom: 0;\"\u003e✅ TI-84 Plus CE\u003cbr\u003e✅ TI-84 Plus CE Python\u003cbr\u003e\u003cspan style=\"color: #c53030; font-size: 0.85em;\"\u003e✖ Not for TI-83, TI-Nspire, or Casio calculators.\u003c\/span\u003e\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"border: 1px solid #ddd; padding: 15px; border-radius: 10px;\"\u003e\n      \u003ch4 style=\"margin-top: 0; color: #004d40;\"\u003eDelivery\u003c\/h4\u003e\n      \u003cp style=\"font-size: 0.95em; margin-bottom: 0;\"\u003eInstant digital download. You receive the TRIGID2.8xp file after purchase.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background: #004d40; color: white; border-radius: 14px; padding: 25px; text-align: center; margin: 40px 0;\"\u003e\n    \u003ch3 style=\"color: white; margin-top: 0;\"\u003eNeed the full Precalculus formula set?\u003c\/h3\u003e\n    \u003cp style=\"opacity: 0.9; margin-bottom: 20px;\"\u003eTRIGID2 is already included in the Precalculus Equations \u0026amp; Formulas bundle, which also covers conics, logs, sequences and series, trig laws, and more — a complete precalculus reference in two programs.\u003c\/p\u003e\n    \u003ca href=\"https:\/\/mcstutoring.com\/products\/precal-precalculus-equations-formulas-program-ti-84-plus-ce\" style=\"display: inline-block; background: #f59e0b; color: #1a1a1a !important; padding: 12px 28px; border-radius: 8px; font-weight: 800; text-decoration: none;\"\u003eView Precalculus Bundle →\u003c\/a\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"text-align: center; color: #666;\"\u003e\n    \u003cp\u003e\u003cstrong\u003eNeed help getting started?\u003c\/strong\u003e \u003ca href=\"https:\/\/mcstutoring.com\/blogs\/general\/how-to-install-ti-84-plus-ce-calculator-programs-2026\" style=\"color: #004d40; font-weight: bold;\"\u003eComplete Install Guide (2026)\u003c\/a\u003e | \u003ca href=\"https:\/\/mcstutoring.com\/blogs\/general\/ti84-plus-ce-program-troubleshooting\" style=\"color: #004d40; font-weight: bold;\"\u003eTroubleshooting\u003c\/a\u003e | \u003ca href=\"https:\/\/mcstutoring.com\/pages\/faq\" style=\"color: #004d40; font-weight: bold;\"\u003eFAQs\u003c\/a\u003e\u003c\/p\u003e\n    \u003cp style=\"font-size: 0.8em; font-style: italic; margin-top: 20px;\"\u003eAP® is a registered trademark of the College Board, which was not involved in the production of, and does not endorse, this product.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Martin McSweeney","offers":[{"title":"Default Title","offer_id":50477631045863,"sku":"","price":30.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/4164\/1959\/files\/trigidmain.webp?v=1764470127"},{"product_id":"calculus-trig-formula-bundle","title":"Calculus \u0026 Trig Formula Bundle (TI-84 Plus CE)","description":"\u003ch2 style=\"color: #004d40; font-weight: 800; font-size: 2em; text-align: center; padding-bottom: 10px;\"\u003eCalculus \u0026amp; Trig Formula Bundle (TI-84 Plus CE)\u003c\/h2\u003e\n\n\u003cp style=\"color: #2b6cb0; font-weight: bold; font-size: 1.15em; text-align: center; margin-bottom: 20px;\"\u003e📘 ~58 derivatives, 33+ integrals, 40+ trig identities — all inside your calculator\u003c\/p\u003e\n\n\u003cdiv style=\"max-width: 800px; margin: 0 auto;\"\u003e\n\n  \u003ca href=\"https:\/\/www.youtube.com\/watch?v=wLR3FpnAIfA\" target=\"_blank\" rel=\"noopener\" style=\"display: block; text-decoration: none;\"\u003e\n    \u003cdiv style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; margin: 18px 0; cursor: pointer; background: #000; border-radius: 10px; box-shadow: 0 4px 12px rgba(0,0,0,0.15);\"\u003e\n      \u003cimg src=\"https:\/\/img.youtube.com\/vi\/wLR3FpnAIfA\/hqdefault.jpg\" alt=\"Calculus and Trig Formula Bundle Demo\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover;\" loading=\"lazy\"\u003e\n      \u003cdiv style=\"position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); background: rgba(0,0,0,0.75); border-radius: 50%; width: 64px; height: 64px; display: flex; align-items: center; justify-content: center;\"\u003e\n        \u003cdiv style=\"width: 0; height: 0; border-left: 22px solid #fff; border-top: 13px solid transparent; border-bottom: 13px solid transparent; margin-left: 5px;\"\u003e\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cp style=\"position: absolute; bottom: 10px; left: 10px; color: white; background: rgba(0,0,0,0.7); padding: 5px 10px; border-radius: 4px; margin: 0; font-size: 14px;\"\u003e▶️ Watch: Calculus \u0026amp; Trig Bundle Demo\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/a\u003e\n\n  \u003cp style=\"font-size: 1.1em; line-height: 1.7; color: #333;\"\u003e\u003cstrong\u003eKeep your most important calculus and trig references inside your calculator.\u003c\/strong\u003e This bundle gives you four TI-84 Plus CE reference programs covering derivatives, integrals, trig identities, and core calculus concepts. Instead of flipping through notes or searching for formulas, pull up exactly what you need directly from your calculator.\u003c\/p\u003e\n\n  \u003ch3 style=\"color: #004d40; font-size: 1.45em; margin: 26px 0 12px;\"\u003eWhat's Included (Files \u0026amp; Functions)\u003c\/h3\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 28px; font-size: 0.94em;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background-color: #004d40; color: white;\"\u003e\n        \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eFile Name\u003c\/th\u003e\n        \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eType\u003c\/th\u003e\n        \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eWhat It Does\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd; font-weight: bold;\"\u003eCALCEQ10\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eReference Program\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eMaster calculus formula reference covering limits and continuity, FTC Parts 1 and 2, L'Hôpital's Rule, differentiation and integration rules, and organized CONCEPT HELP sections throughout.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd; font-weight: bold;\"\u003eDERIV2\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eReference Program\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e~58 derivative formulas including power, product, quotient, and chain rules; trig and inverse trig derivatives; exponential and logarithmic derivatives; and implicit, logarithmic, and parametric differentiation.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd; font-weight: bold;\"\u003eINTEG1\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eReference Program\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e33+ integration formulas covering the LIATE rule, u-substitution, integration by parts, trig substitution, partial fractions, and common antiderivative patterns.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd; font-weight: bold;\"\u003eTRIGID2\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eReference Program\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e40+ trig identities — Pythagorean, quotient, and reciprocal identities; addition and subtraction formulas; all three double-angle variations for cos(2A); half-angle formulas; product-to-sum and sum-to-product; power reduction; and Laws of Sines and Cosines.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003cdiv style=\"background: #f0f9f6; padding: 20px; border-radius: 12px; border: 1px solid #b2dfdb; margin: 25px 0;\"\u003e\n    \u003ch3 style=\"color: #004d40; margin-top: 0; font-size: 1.3em;\"\u003eWhy students use this bundle\u003c\/h3\u003e\n    \u003cul style=\"margin: 10px 0 0 20px; line-height: 1.8; color: #004d40; font-weight: bold;\"\u003e\n      \u003cli\u003e✅ Quick access to calculus and trig references during homework and review\u003c\/li\u003e\n      \u003cli\u003e✅ Reduces memorization pressure on exams\u003c\/li\u003e\n      \u003cli\u003e✅ Formulas organized and searchable inside your calculator\u003c\/li\u003e\n      \u003cli\u003e✅ Useful for AP Calculus AB, AP Calculus BC, Trigonometry, and Precalculus\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background: #f8fffb; padding: 18px 20px; border-left: 4px solid #2e7d32; margin: 20px 0;\"\u003e\n    \u003cp style=\"margin: 0; line-height: 1.7;\"\u003e\u003cstrong\u003eReference-only bundle:\u003c\/strong\u003e These files display formulas, identities, and examples. They do not solve symbolic calculus or trigonometry problems. For the full AP Calculus BC solver and reference suite, see the AP Calculus BC Bundle below.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 28px;\"\u003e\n    \u003cdiv style=\"border: 1px solid #ddd; padding: 15px; border-radius: 10px;\"\u003e\n      \u003ch4 style=\"margin-top: 0; color: #004d40;\"\u003eCompatible Calculators\u003c\/h4\u003e\n      \u003cp style=\"font-size: 0.95em; margin-bottom: 0;\"\u003e✅ TI-84 Plus CE\u003cbr\u003e✅ TI-84 Plus CE Python\u003cbr\u003e\u003cspan style=\"color: #c53030; font-size: 0.85em;\"\u003e✖ Not for TI-83, TI-84 Plus Silver Edition, TI-89, TI-Nspire, or Casio calculators.\u003c\/span\u003e\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"border: 1px solid #ddd; padding: 15px; border-radius: 10px;\"\u003e\n      \u003ch4 style=\"margin-top: 0; color: #004d40;\"\u003eDelivery\u003c\/h4\u003e\n      \u003cp style=\"font-size: 0.95em; margin-bottom: 0;\"\u003eInstant digital download. You receive all four .8xp files after purchase.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background: #004d40; color: white; border-radius: 14px; padding: 25px; text-align: center; margin: 40px 0;\"\u003e\n    \u003ch3 style=\"color: white; margin-top: 0;\"\u003eTaking AP Calculus AB or BC?\u003c\/h3\u003e\n    \u003cp style=\"opacity: 0.9; margin-bottom: 20px;\"\u003eThe AP Calculus BC Bundle includes all four programs in this bundle plus SERIES Pro (with the GPART Method), parametric and polar equations, and sequences and series — complete BC coverage.\u003c\/p\u003e\n    \u003ca href=\"https:\/\/mcstutoring.com\/products\/ap-calculus-bc-bundle-ti-84-plus-ce\" style=\"display: inline-block; background: #f59e0b; color: #1a1a1a !important; padding: 12px 28px; border-radius: 8px; font-weight: 800; text-decoration: none;\"\u003eView AP Calculus BC Bundle →\u003c\/a\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"text-align: center; color: #666;\"\u003e\n    \u003cp\u003e\u003cstrong\u003eNeed help getting started?\u003c\/strong\u003e \u003ca href=\"https:\/\/mcstutoring.com\/blogs\/general\/how-to-install-ti-84-plus-ce-calculator-programs-2026\" style=\"color: #004d40; font-weight: bold;\"\u003eComplete Install Guide (2026)\u003c\/a\u003e | \u003ca href=\"https:\/\/mcstutoring.com\/pages\/faq\" style=\"color: #004d40; font-weight: bold;\"\u003eFAQs\u003c\/a\u003e\u003c\/p\u003e\n    \u003cp style=\"font-size: 0.8em; font-style: italic; margin-top: 20px;\"\u003eAP® is a registered trademark of the College Board, which was not involved in the production of, and does not endorse, this product.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"mcstutoring.com","offers":[{"title":"Default Title","offer_id":51352877629671,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/4164\/1959\/files\/calceq2main.png?v=1757095344"}],"url":"https:\/\/ti84programs.com\/collections\/trigonometry.oembed","provider":"mcstutoring.com","version":"1.0","type":"link"}