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If cos y =x cos (a + y) then (dy)/(dx)=...

If `cos y =x cos (a + y) ` then `(dy)/(dx)=`

A

`(sin^(2) (a + y))/(sin a )`

B

`(cos ^(2) (a -y))/(sin a )`

C

`(sin ^(2) (a+ y))/(sina )`

D

`(cos ^(2) (a + y))/(sina )`

Text Solution

Verified by Experts

The correct Answer is:
D
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