If tan B= cot P tan A, then cot2(P/2) is equal to
(a) sin(A+B) / sin (A-B) (B) sin(A-B) / sin (A+B)
(c) cos(A+B) / cos (A-B) (D) cos(A-B) / cos (A+B)
Explain pls how???
If tan B= cot P tan A, then cot2(P/2) is equal to
(a) sin(A+B) / sin (A-B) (B) sin(A-B) / sin (A+B)
(c) cos(A+B) / cos (A-B) (D) cos(A-B) / cos (A+B)
Explain pls how???