Question

SinA+SinB÷1-SinA+SinB if tanA=1÷2 and CosB=3÷2

Answer 1

The Question can be written as sinA+sinB-sinA+sinB= 2sinB

cosB=3/2 so sinB=√(1-cos^2B)= √(1-9/4)
=-5/4
Therefore 2sinB=2×-5/4=-5/2
Hope this helps u