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