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