If cos x =1/sqrt(1+t^(2)), and sin y = t...

If `cos x =1/sqrt(1+t^(2))`, and `sin y = t/sqrt(1+t^(2))`, then `(dy)/(dx)` =

A

`-1`

B

`(1-t)/(1+t^2)`

C

`(1)/(1+t^2)`

D

1

Verified by Experts

The correct Answer is:

D

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