Use Phasors to Express the Following Equation as a Single $$v ( t ) = - 45 \sin \left( 2 \pi 50 t - 120 ^ { \circ } \right) + 65 \sin \left( 2 \pi 50 t + 150 ^ { \circ } \right)$$

Essay

use phasors to express the following equation as a single cosine. $$v ( t ) = - 45 \sin \left( 2 \pi 50 t - 120 ^ { \circ } \right) + 65 \sin \left( 2 \pi 50 t + 150 ^ { \circ } \right)$$