Solve the equation in degrees for all exact solutions where appropriate. Round approximate answers in degrees to the nearest tenth. Write answers using the least possible nonnegative angle measures. 2 cos theta = 2 cos 2 theta What is the solution set? A. {0 degree + 360 degree n, 120 degree + 360 degree n, 240 degree + 360 degree n, where n is any integer} B. {0 degree, + 360 degree n, 150 degree + 360 degree n, 240 degree + 360 degree n, where n is any integer} C. {30 degree + 360 degree n, 120 degree + 360 degree n, 270 degree + 360 degree n, where n is any integer} D. {30 degree + 180 degree n, 150 degree + 180 degree n, 270 degree + 180 degree n, where n is any integer}
