If xsintheta+ycostheta=sintheta.costheta...

If `xsintheta+ycostheta=sintheta.costheta` and `xsintheta-ycostheta=0` find `x^(2)+y^(2)`

A

1

B

`(3)/(2)`

C

`(1)/(2)`

D

0

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The correct Answer is:

C

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