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The equation of the locus of the point o...

The equation of the locus of the point of intersection of the straight lines `xsintheta+(1-costheta)y=asintheta` and `xsintheta-(1-costheta)y+asintheta=0` is

A

`y= +- ax`

B

`x= +- ay`

C

`y^(2)= 4ax`

D

`x^(2) + y^(2)= a^(2)`

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The correct Answer is:
D
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