Transform the following sinusoids into phasor form and draw a phasor diagram. Use the additive property of phasors to find \(v_{1}(t)+v_{2}(t)\).

(a) \(v_{1}(t)=240 \cos (\omega t+43) \mathrm{V}\)

(b) \(v_{2}(t)=120 \cos \left(\omega t-225^{\circ}ight) \mathrm{V}\)