These identities are summarized in the first two rows of the following table, which also includes sum and difference identities for the other trigonometric functions.

Jul 23, 2025 · The following illustration represents all the key trigonometric identities essential for solving any trigonometric problem. List of all Important Trigonometric Identities

Mar 7, 2025 · What are trigonometric identities with their list. Also, learn its proof with solved examples.

Trigonometric identities include reciprocal, Pythagorean, complementary and supplementary, double angle, half-angle, triple angle, sum and difference, sum and product, sine rule, cosine …

Triple-Angle Identities sin (3x) = −sin3 (x) + 3cos2 (x) sin (x) sin (3x) = −4sin3 (x) + 3sin (x) cos (3x) = cos3 (x) − 3sin2 (x) cos (x)

Aug 10, 2025 · Master all trigonometric identities for AP Calculus, Precalculus, and beyond. Includes a complete list, proofs, and problem-solving strategies.

All these trig identities can be derived from first principles. But there are a lot of them and some are hard to remember. Print this page as a handy quick reference guide. Recall that these …