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If x siny=sin(y+a) and (dy)/(dx)=(A)/(1+...

If `x siny=sin(y+a)` and `(dy)/(dx)=(A)/(1+x^(2)-2x cos a)` then the value of A is

A

2

B

cos a

C

sin a

D

none of these

Text Solution

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The correct Answer is:
C
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