Find the measure of angle BOC
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AO=BO=r
therefore, OAB=OBA
50=OAB
SIMILARLY,
OAC=20
OAB+OAC=BAC
50+20=BAC
70=BAC
therefore, OAB=OBA
50=OAB
SIMILARLY,
OAC=20
OAB+OAC=BAC
50+20=BAC
70=BAC
nitthesh7:
and angle boc =2(bac)
angle boc=140*
but anyway a brilliant answer
o yes..
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