6. Let sin A = with A in QII and sin B : - with B in QIII. Find sin(A + B) and cos(A + B). 7. Let sin A = y3 with A in Q
Posted: Tue May 10, 2022 9:13 am
6. Let sin A = with A in QII and sin B : - with B in QIII. Find sin(A + B) and cos(A + B). 7. Let sin A = y3 with A in QI and tan B = 1 with B in QIII. Find tan(A + B). = 5