Trigonometry

Asked by  | 16th Aug, 2008, 07:38: PM

Expert Answer:

Since, cos(90- A) = sinA; tan(90-A) = cotA; tan A.cotA = 1

Answered by  | 16th Aug, 2008, 11:58: PM

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