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Question

The equation of the normal at t=π2 to the curve x=2sint,y=2cost is?

A
x=0
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B
y=0
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C
y=2x+3
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D
y=3
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Solution

The correct option is B y=0
dx=2cost,dy=2sint
dxdy=cott
dxdy=cott
Slope = 0 as it is x-axis
Hence, y=0

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