Define x(f) asX(t)=5 cos (ωt + π) + 4 cos (ωt +π) + 4cos(ωt + π)(a) Express x(t) in the fo...

Define x(f) as

X(t)=5 cos (ωt + π) + 4 cos (ωt +π) + 4cos(ωt + π)

(a) Express x(t) in the form x(t) = A cos (ωt + φ) by finding the numerical values of A and φ

(b) Plot all the phasors used to solve the problem in (a) in the complex plane