Question

Q.8 .(a-30)*and(2a)*are the measure of two supplementary angles.Find the measure of each angle.

Answer 1

Step-by-step explanation:

let the angles be a-30 ans 2a

a-30+2a =180 °

-30 +3a =180°

3a=180+30

3a=210

a=210/3

a=70

2a=2*70=140

a-30=70-30=40