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Prove that for thetainR, the line y=(x-1...

Prove that for `thetainR`, the line `y=(x-11)costheta-cos3theta` is always normal to the parabola `y^(2)=16x`.

A

`theta=pi//3`

B

`pi//6`

C

`theta=(2pi)/(3)`

D

all values of `theta`

Text Solution

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The correct Answer is:
D
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