If sinA = 3/5, cosB = –12/13, where A And B Both lie in second quadrant, find the value of sin(A +B).

Given sinA = 3/5 And cosB = -12/13


A And B lie in the second quadrant.


So sine function is positive And cosine function is negative.


We know that






Now consider sin(A +B),


sin(A +B)




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