Question

Find the measure of angle A for the triangle shownThe value of angle Ais

Answer 1

Answer:

A = 47

Explanation:

The sum of the angles in a triangle adds up to 180 degrees; therefore,

$A+B+C=180$

Since B = 31 and C = 102, we have

$31+102+A=180$$133+A=180$

Subtracting 133 from both sides gives

$A=180-133$$A=47$

which is our answer!