in a triangle abc,if a=angle60, angle b=80 and the bisector of angle b and angle c meet at o, then angle boc=?
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A+B+C=180
60+80+C=180
140+C=180
C=180-140
C=40
60+80+C=180
140+C=180
C=180-140
C=40
fathima7a34:
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