Question

If an angle is 30° less than two times of its supplement,find the measure of greater angle

Answer 1

Let the unknown angle be X.

Supplement of X = 180- x

Two times of supplement = 2( 180-x)

ATQ

X = 2(180- X)-30

X = 360 - 2x - 30

3x = 330

X= 110

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