EXAMPLE 3
Standardized
Test Practice
SOLUTION
In the right triangle, you are given the lengths of the side adjacent to θ and the
hypotenuse, so use the inverse cosine
function to solve for θ.
cos θ
=
adj
hyp
=
6
11
cos – 1
θ
=
6
11
56.9°
The correct
answer is C.
ANSWER