Question

If (a + 10) and (a + 20) are supplementary angles, find them

Answer 1

Answer:

First angle= 85°

Second angle= 95°

Step-by-step explanation:

As we all know, the sum of supplementary angles is 180°.

So,

a + 10 + a + 20 = 180°

2a + 30 = 180°

2a = 180 - 30

2a = 150

a = 150/2

a=75°

Hence, first angle= (a + 10)= 75+10= 85°

second angle= (a + 20)= 75+20= 95°

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