prove that sin3ACOS(B-C)+sin3Bcos(C-A)+sin3Ccos(A-B)=3sinAsinBsinC

Asked by deepu | 16th Jun, 2013, 07:50: PM

Expert Answer:

Answered by  | 16th Jun, 2013, 10:16: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.