Thread: [SOLVED] Revision - inverse functions, quadrilateral inside circle.

2. In the part of the circle that lies in the 1st quadrant, the point P9x,y) is on the circle with centre at the origin ). M is on the x-axis at x = 2 and N is on the y-axis at y=1. The size of angle MOP is x radians. How exactly do I find the area of the quadrilateral OMPN so that it is A = 4sinx + 2cosx???

Here is a diagram of 2.