A triangle was dilated by a scale factor of 2. If cos aº = and FD measures 6 units, how long is DE?

3.6 units
8 units
10 units
12.4 units

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Find the x-intercepts of the parabola withvertex (1,1) and y-intercept (0,-3).write your answer in this form: (x1,if necessary, round to the nearest hundredth.

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