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Prove that cos((3pi)/(2)+x)cos(2pi+x)[...

Prove that
`cos((3pi)/(2)+x)cos(2pi+x)[cot((3pi)/(2)-x)+cot(2pi+x)]=1`

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Knowledge Check

  • cos^(2)((pi)/(12))+cos^(2)((3pi)/(12))+cos^(2)((5pi)/(12))= …………

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