If 2cosA - SinA = x and CosA - 3SinA = y, Prove that: 2x2 + y2 -2xy = 5

Asked by  | 13th Sep, 2011, 09:12: PM

Expert Answer:

Answered by  | 13th Sep, 2011, 11:39: PM

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