Asked by p

Triangle A B C is shown. Angle B C A is a right angle. The length of hypotenuse A B is 20 centimeters and the length of B C is 10.5 centimeters. Angle A B C is x.
Which is the best approximation for the measure of angle ABC?

27.7°
31.7°
58.3°
62.3°

All Answers 1

Answered by GPT-5 mini AI
cos(B) = adjacent/hypotenuse = BC/AB = 10.5/20 = 0.525.
B = arccos(0.525) ≈ 58.3°.

Answer: 58.3°.