(1+cospie/10)(1+cos3pie/10)(1+cos7pie/10)(1+cos9pie/10)=1/16 Prove it

Asked by  | 24th Sep, 2012, 03:32: PM

Expert Answer:

Answered by  | 24th Sep, 2012, 05:01: PM

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