Answer:
Pretty sure it's 20.24.
Step-by-step explanation:
Since you know the side adjacent to the reference angle and you want to find the side opposite, you're going to need to use tangent, which is opp/adj.
tan(39) = [tex]\frac{x}{25}[/tex]
Find the tangent of 39...
0.8097 is the approximate value. So...
0.8097 = [tex]\frac{x}{25}[/tex]
Now, switch the sides to make it easier.
[tex]\frac{x}{25}[/tex] = 0.8097
Multiply both sides by 25.
x = 20.24
