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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

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

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
A
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