Question

In figure AB and AC are opposite Rays. If( a-3b)=20 find angles a and b.

Answer 1

S O L U T I O N: -

it is given that

a+b =180.......

and

a- 3b= 20

subtraction both equation

a+b-a+3b=180-20

4b = 160

b = 40

put in i

a = 140

hope it's help

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Answer 2

Step-by-step explanation:

this is the attachment

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