Question

What is the measure of A?

Answer 1

A = 50°

Explanation:

A + B + C = 180°

A + 100° + 30° = 180°

A = 180° - 100° - 30°

A = 50°

Answer 2

So measure of angle A is 50degrees

Explanation:

As we know that A+B+C=180(supplementary angles)

A+100+30=180

A+130=180

A=180-130

A=50degrees