Question

In the triangle below,

y = [? ] cm. Round to the
nearest tenth.

15 cm
X
35°
909

Answer 1

12.3

Explanation:

You will use cosine to solve for y because you are given the hypontenuse and need to find the adjacent side.

cos 35 degrees = adjacent/hypontenuse

cos 35 = y/ 15

15( cos35 ) = y

y=12.287

=12.3