1.

Sin A + sin B + sin(A + B)sin A + sin B - sin(A + B)​

Answer»

Step-by-step EXPLANATION:

Assuming ∠A=60

and ∠B=30

L.H.S=SIN(A+B)=sin(60

+30

)

=sin(90

)=1

R.H.S=sinA+sinB=sin60

+SIN30

=

2

3

+

2

1

=

2

3

+1

Thus, L.H.S

=R.H.S

Thus,sin(A+B)

=sinA+sinB



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