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7:57
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Sami’s A Plus
Crush These Trig Identities!
Master some of the most important trigonometric identities used in Pre-Calculus and Calculus! In this lesson, we break down key proven trig identities, simplify step-by-step, and apply double-angle identities to powerful proof questions. You’ll learn and use: 🔹 Fundamental Pythagorean Identities • sin^2 x + cos^2 x = 1 • 1 + tan^2 x ...
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