Solve: 1/3a^2-1/a=1/6a^2

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

Urgent? will give brainliest to the first correct answer what is the area of the figure?

Afigure is rotated 180°. if one of the points on the image is g'(4, -8), what were the coordinates of g? (8,4) (8,-4) (4,8) (4,8)