Math, asked by aliya6339, 1 year ago

How to do this math sum

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Answered by namanjain611

adb = 90

dab = 40

hence dba =50

so sum of opp angle of cyclic quad is 180 so acd + dba = 180

hence acd = 130

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Answered by rehaanboby2003

Answer:

AB is parallel to CD

Therefore,

Angle CDA=angle DAB=40

AB is diameter

Therefore angle ADB=90

In triangle ADB,

ADB+DAB+DBA=180(angle sum)

Therefore angle DBA=50

ABCD is a cyclic quadrilateral

Therefore,

Angle ACD+angle DBA = 180

Therefore angle ACD = 130

Hope it helps..

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