Question

HELP 30 POINTS!!!!!

Find the measure of angle A round your answer to the nearest hundredth

33.56
39.81
50.19
56.44

Answer 1

by pythagorean formula, the last side is √(61)

by cos rule

cos A

`= \frac{ {6}^(2) + 61 - {5}^(2) }{2 * 6 * √(61) } \\ = (72)/(12 √(61) ) \\ = (6)/( √(61) )`

A = 39.81