Am i right in saying that when your comparing co-efficients for RSin(a+b) you swap over for the coefficients for sin and cos, while in RCos(a+b) you dont swap the co-efficients?(adsbygoogle = window.adsbygoogle || []).push({});

RSin(x+a)= RSinxCosa + RCosxSina

4Sin + 1Cos = RSinxCosa + RCosxSina

RSina = 1

RCosa = 4

BUT for RCos(x+a) = RSinxCosa + RCosxSina

4Sin + 1Cos = RSinxCosa + RCosxSina

RSina = 4

RCosa = 1

Do you see what i mean?

Thanks

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# Homework Help: RCos(a+b) Clarification

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