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If sin y = x sin (y - a) and (dy)/(dx) ...

If ` sin y = x 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

`-2`

Text Solution

Verified by Experts

The correct Answer is:
C
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