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deep.sachd asked this question on School Talk

what are the formulae of the following:-

rn

cos(a+b+c)

rn

sin(a+b+c)

Asked by deep.sachd(student), on 23/8/10
Answers

 Take a=x and b+c=y and then use the formula to derive the formulae you asked.

Thanks

Posted by NITIN(student), on 24/8/10
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