Question

sin(A+B). cos(A-B) +sin(A-B). cos(A+B) =
Pls give me answer quickly​

Answer 1

Step-by-step explanation:

the answer will be sin(a+b+a-b) =0

the answer will be 2a

Answer 2

Answer:

Since,

sin(x+y) = sinx × cosy + cosx × siny

sin(x-y) = sinx × cosy - cosx × siny

cos(x+y) = cosx × cosy - sinx × siny

cos(x-y) = cosx × cosy + sinx × siny

We have to prove that,

L.H.S.

= R.H.S

Hence, proved....

here is the correct answer please mark me brainliest and give thanks