how to do it please show me
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∠a+∠b=180° (linear pair)
∠a-∠2b=30° (given)
THEN SUBSTITUTE IT
we will get 3b=150°
then b=150/3=50
then put the value of b in first equation
a+50=180
a= 180-50=130
∠a-∠2b=30° (given)
THEN SUBSTITUTE IT
we will get 3b=150°
then b=150/3=50
then put the value of b in first equation
a+50=180
a= 180-50=130
Answered by
0
acording linear pair
a-2b=30
a=30+2b
a\q
30+2b+b=180
30+3b=180
3b=180-30
b=150\3
b=50
therfore
a=30+2b
a=30+2×50
a=30+100
a=130
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