Question

sin(a+b)/sin(a-b)=find the value.​

Answer 1

Step-by-step explanation:

Answer

sin(A+B).sin(A−B)

=[sin(A)cos(B)+cos(A)sin(B)][sin(A)cos(B)−cos(A)sin(B)]

=sin

2

Acos

2

A−cos

2

Asin

2

A

=sin

2

A[1−sin

2

B]−[1−sin

2

A]sin

2

B

=sin

2

A−sin

2

Asin

2

B−sin

2

B+sin

2

Asin

2

B

=sin

2

A−sin

2

B

Hence,theoptionCisthecorrectanswer.

Answer 2

Step-by-step explanation:

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