Trigonometric Functions and their Identities

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Trigonometric Functions and their Identities

Inverse Trigonometric Functions

y = tan-1

x = tan y

y = cos-1

x = cos y

y = sin-1

x = sin y

Trigonometric Functions

Trigonometric Identities

Product-to-Sum

Sum-to-Product

Half-Angle

Double-Angle

Sum-Difference

Even-Odd

Quotient

Pythagorean

Reciprocal