35.5k views
4 votes
In the triangle below, determine the measure of side a.

In the triangle below, determine the measure of side a.-example-1
User Emilan
by
8.1k points

1 Answer

3 votes
use trigonometry
sin 42 = a / 21

a = 21 sin 42 = 14.05
User Rebellion
by
8.8k points