XcosA-ysinA=aXsinA+ycosA=bThen prove that x2 +y2=a2+b2

1.	XcosA-ysinA=aXsinA+ycosA=bThen prove that x2 +y2=a2+b2
Answer» xcosA - ysinA=axsinA+y cosA=b then prove that x²+y²=a²+b²

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