Answers

The Brainliest Answer!
2016-02-28T11:17:30+05:30
∠O= 2∠A
in ΔOBC
OB = OC 
∠B=∠C
∠B+∠C+2∠A = 180°
2∠B+2∠A=180°
∠A+∠B= 90°
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ACCEPT MY REQUEST
2016-02-28T11:42:15+05:30
Let boc=p
we have a= p/2 1 equation
but p= 180-2b
put the value of p in 1eq
we get
a= 2(90- b)/2
a= 90-b
and hence
a+b=90
I hope its the answer
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