### Trigonometric Identities

Trigonometric Identities Sine, tangent, cotangent and cosecant in mathematics an identity is an equation that is always true. Meanwhile trigonometric identities are equations that involve trigonometric functions that are always true. This identities mostly refer to one angle labelled $displaystyle theta$. Defining Tangent, Cotangent, Secant and Cosecant from Sine and Cosine \$ displaystyle tan […]