# Cosine of an inverse tangent

Geometry Level 1

In the right triangle above, $$0<b<a$$. One of the angle measures in the triangle is $$\tan^{-1} \left( \dfrac ab\right)$$. What is $$\cos \left[ \tan^{-1} \left( \dfrac ab\right) \right ]$$?

×

Problem Loading...

Note Loading...

Set Loading...