Math, asked by varad7249, 7 months ago

o is the centre of a circle . angle AOC= 140 degree and ab is diameter of the circle find angle cdb​

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Answered by ansh65932
1

Answer:

20°

Step-by-step explanation:

angle cob=180-140=40°

angle cdb=1/2angle cob(angle subtended by an arc at center is twice of any angle subtended by it on the circle)

cdb=40/2=20°

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