# What are the reciprocal identities of trigonometric functions?

Dec 8, 2014

The reciprocal functions are as follows:

$\sin \left(a\right) \cdot \csc \left(a\right) = 1$

$\cos \left(a\right) \cdot \sec \left(a\right) = 1$

$\tan \left(a\right) \cdot \cot \left(a\right) = 1$