Question

answer it fast........................

Answer 1

your answer is option come
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Answer 2

SINCE BA IS DIAMETER

SO THE ANGLE SUBTENDED BY IT WILL BE

90

ANGLE ABD = 90

ADB IS TRIANGLE SO

ADB + ABD + DBA = 180

90 + ABD + 70 = 180

ABD = 180-90-70

ABD = 20

ABCD IS A CYCLIC QUADRILATERAL

SO OPP ANGLE WILL HAVE SUM OF 180

ADC + CBA = 180

ABD + BDC + CBD + DBA = 180

90 + BDC + 30 +20 = 180

BDC = 180 - 140

BDC = 40

BDC + ABD = 40 + 20

= 60

THEREFORE UR ANSWER IS RIGHT



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