Question

Find the measure of angle A.

A) 71°
C) 349
E) 440
B) 36°
D) 1230

Answer 1

The choice C) 34°

Explanation:

`75 + (x + 42) + (x + 79) = 180 \\ 2x + 196 = 180 \\ 2x = 180 - 196 \\ 2x = - 16 \\ \\ x = ( - 16)/(2) \\ \\ x = - 8 \\ \\ x + 42 = > - 8 + 42 = 34`