If x = sint cos2t and y = cost sin2t , t...

If `x = sint cos2t` and `y = cost sin2t` , then at `t = pi/4`, the value of `dy/dx` is equal to:

A

`-2`

B

2

C

`1/2`

D

`-1/2`

Verified by Experts

The correct Answer is:

C

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