Evaluate 2xcubed if x= 3/4

The angles below are supplementary. what is the value of x? a pair of supplementary angles is shown. one angle measures 7x + 33, and the other angle measures 70. 5.3 8.14 11 14.7

Sketch one cycle if the cosine function y=2cos2theta

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).