1.

if sin(A+B)=1/2 and cos(A-B)=1/2 find A and B

Answer» Sin 30=1/2 so A+B=30---------eq1Cos60=1/2 so A-B=60---------eq2Now solve eq 1and 2A+B=30A-B=602A =90A=45B=-15Ok


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