Question

A right triangle upper A upper B upper C. The right angle, labeled upper C, is on the bottom left. The hypotenuse, side upper B upper A, slopes downward from top left to bottom right. Side upper A upper C is labeled 25. Side upper C upper B is labeled 20.
Use the inverse of the tangent ratio to find the approximate angle measure at vertex A
. Round your answer to the nearest whole degree.

(1 point)

Answer 1

Angle A has opposite = 20 and adjacent = 25, so
A = arctan(20/25) = arctan(0.8) ≈ 38.66° ≈ 39°.