Question

Find the measure of Angle A. Type the correct answer rounded to one decimal place.

Answer 1

Check the picture below.

make sure your calculator is in Degree mode.

Answer 2

22.6°

Explanation:

Since all three sides of the right triangle are given, you can use any of the trig ratios to find the angle. I choose to use the tangent.

tan(A) = BC/AC = 5/12

Then the inverse trig function tells you ...

A = arctan(5/12) = 22.6°