Question

What is the length of side Ef? Round
your answer to the
nearest tenth.

Answer 1

11.1

Explanation:

Here, we want to get EF

To do this, we use the appropriate trigonometric ratio

we have the side facing the right angle as the hypotenuse

the measure of this is 18

The side facing the angle 38 is EF

This is the opposite to angle 38

The ratio of the opposite to the hypotenuse is equal the sine

sin 38 = EF/18

EF = 18 sin 38

EF = 11.1