Post a New Question

posted by Alex on Saturday, May 7, 2011 at 4:26pm.

How would you find the both primary solutions to 3cos(2x) = 2.5

cos 2x = .8333333333333333333........... which is 5/6 by the way or 2x = 33.55 deg x = +/- 16.8 deg

More Related Questions