Question

Find the measure of angle A

Answer 1

43°

Explanation:

(x + 53)° + (x + 74)° + 73° = 180°

(x + 53 + x + 74)° = 180° - 73°

(2x + 127)° = 107°

2x + 127 = 107

2x = 107 - 127

2x = - 20

x = - 20/2

x = - 10

`m\angle A = (x +53)\degree \\\\</p><p>m\angle A = (-10 +53)\degree \\\\</p><p>m\angle A = 43\degree \\\\</p><p>`