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A variable triangle ABC is inscribed in ...

A variable triangle ABC is inscribed in a circle of diameter x units. At a particular instant the rate of change of side 'a' is x/2 time the rate of change of the opposite angle A then A =

A

`pi//2`

B

`pi//3`

C

`pi//4`

D

`pi//6`

Text Solution

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The correct Answer is:
B
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