Solve (a) f(x)=0. (b) f(x) > 0, and (c) f(x) <0 over the

Last updated: 7/30/2022

Solve (a) f(x)=0. (b) f(x) > 0, and (c) f(x) <0 over the interval [0,2π). f(x)=2 sin2xcos x-2 cos x