Question

if sin ( A - B ) = cos ( A + B) = 1/2, find A and B

Answer 1

I thing its helpfull for h

Answer 2

SIN(A-B)=1/2

SIN (A-B)= SIN 30 ["sin 30 = 1/2]

Functions are equal therefore

A-B=30

similarly

COS (A+B)=COS 60 [ cos 60=1/2]

A+B=60

A-B=30

2A=90

A=45