A right triangle is shown. What is cos A?
Cosine of an angle is the ratio of the adjacent side to the hypotenuse.
adjacent  = cosine hypotenuse Find the side adjacent to ∠A (next to angle A), and find the hypotenuse (side across from the right angle). 8 cos A =  {adjacent over hypotenuse} 17 Ask Algebra House Comments are closed.

Geometry State Test Practice Archives
November 2019
