Question

2
In the given figure, if b = a + 20°, find the value
of a.
​

Answer 1

Step-by-step explanation:

a+b = 180°

given that, b = a+20°

a+a+20 = 180°

2a= 180- 20

a = 160/2

a = 80°

Therefore

a= 80°

b = a+20° = 80 + 20 = 100°

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