sin(x+y)+cos(x-y)=(sinx+cosx)(siny+cosy)

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sin(x+y)+cos(x-y)=(sinx+cosx)(siny+cosy)

Guest Jan 8, 2015

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Best Answer

+118691

+10

You want me to prove that is true?

LHS= Sinxcosy+cosxsiny+cosxcosy+sonxsiny

RHS=sinxsiny+sinxcosy+cosxsiny+cosxcosy

RHS=LHS

Melody Jan 8, 2015

1⁺⁰ Answers

+118691

+10

Best Answer

You want me to prove that is true?

LHS= Sinxcosy+cosxsiny+cosxcosy+sonxsiny

RHS=sinxsiny+sinxcosy+cosxsiny+cosxcosy

RHS=LHS

Melody Jan 8, 2015

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