It's the last dang question and I can't quite seem to wrap my head around it. >: (
The angle 2x lies in the fourth quadrant such that cos 2x = 8/17
a) Sketch the location of angle 2x.
b) Which Quadrant contains angle x?
c) Determine an exact value for cos x.
d) Use a calculator to determine the measure of x, in radians.
e) Use a calculator to verify your answer for part c).