If sin(A-B)=1/2 , cos(A+B)=1/2 then find A and B
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given that
sin(a-b)=1\2
cos(A+B)=1\2
if sin(a-b)=1\2
=sin(a-b)=30=(1)
If cos(a+b)=1\2
=cos(a+b)=60=(2)
eqn(1)+eqn(2)
A-B=30°
A+B=60°
+
2A=90
A=45°
putA=45° in eqn(2)
=A+B=60
=45°+B=60
B=60°-45°
B=15°
A=45°\B=15°
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