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If xsin^3alpha+ycos^3alpha=sinalpha cos ...

If `xsin^3alpha+ycos^3alpha=sinalpha cos alpha` and `xsinalpha-ycosalpha=0` then `x^2+y^2=`

A

`-1`

B

`pm1`

C

1

D

0

Text Solution

Verified by Experts

The correct Answer is:
C
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