If sinx+ sin²x= 1 then prove that cos²x+ cost x= 1

1.	If sinx+ sin²x= 1 then prove that cos²x+ cost x= 1
Answer» sinx=1-sin^2x1-sin^2x=cos^2x=>sinx=cos^2xsin^2x=cos^4x=> 1-cos^x=cos^4x

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