If sin (A-B) =12, cos (A+B)=12 0° ?, Find A and B

If sin (A-B) =12, cos (A+B)=12 0° < ? + ? ≤ 90°, A> ?, Find A and

1.	If sin (A-B) =12, cos (A+B)=12 0° < ? + ? ≤ 90°, A> ?, Find A and B
Answer» A+B=120 .................[1 ]A-B =12...................... [2]___________2A = 108A= 108/2A= 54Value of A in eq 2A-B=1254-B = 12-B = 12-54-B = - 42 - cancelled So B = 42So value of A =54 B = 42