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The angle between the curves x^(2) = 4y,...

The angle between the curves `x^(2) = 4y, y^(2) = 4x` at (4,4) is

A

`tan^(-1)(1/2) `

B

`tan^(-1)(3/4)`

C

`pi/2`

D

`pi/4`

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The correct Answer is:
B
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