Question

Show by an example that
sin A + sin B ≠ sin (A + B)

Answer 1

Answer:

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Step-by-step explanation:

sin A + sin B

let,A=30°

B=60°

then,sin 30° + sin 60°

=1/2+√3/2

=(1+√3)/2

now,sin (30+°+60°)

=sin 90°

=1

therefore,sinA+sinB is not equal to sin(A+B)