I will do my best to give brainlist! How do I find the radius?

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

Type the correct answer in each box. use numerals instead of words. if necessary, use / fir the fraction bar(s). the graph represents the piecewise function: h

Joanie wrote a letter that was 1 1/4 pages long. katie wrote a letter that was 3/4 page shorter then joagies letter. how long was katies letter