Question

If A=60 and B=30 verify that, sin(A+B)=sinA.cosB+cosA.sinB

Answer 1

Hi mate,

here's your answer

Answer 2

Answer:

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In case you aren't given values of A and B, this is how you can do it:

LHS=sin(A+B)cosAcosB

=sinAcosB+cosAsinBcosAcosB

=sinAcosA+sinBcosB

=tanA+tanB

=RHS