Question

How do you find the coordinates of the terminal points corresponding to the following arc length on the unit circle: 11π/4?

Answer 1

Coordinates of point M(x, y) extremity of the arc 11pi/4:

`x = cos [(11pi)/4] = cos ((3pi)/4 + 2pi) = -cos pi/4 = -(sqr2)/2`

`y = sin [(11pi)]/4 = sin ((3pi)/4 + 2pi) = sin pi/4 = (sqr2)/2`