Xsin^2A+Ycos^2A=sinA×cosA and XsinA=YcosA . Prove that X^2+Y^2=1

1.	Xsin^2A+Ycos^2A=sinA×cosA and XsinA=YcosA . Prove that X^2+Y^2=1
Answer» Bro X^2 +Y^2=0 not 1

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