find value of A

Asked by  | 6th Oct, 2008, 09:17: PM

Expert Answer:

cos A - sin A/ cosA + sinA = 1-3/ 1+3

On the LHS Multiply and divide by cos A, you get

1 - tan A / 1+ tan A   = 1-3/ 1+3

tanA = 3

A = 60 degrees

Answered by  | 7th Oct, 2008, 10:49: AM

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