Signals and Systems - Engineering

Q1:

If i = 10 + 12 cos 500t - 3.5 sin 500 t, then in amplitude phasse form i =

A 10 + 12.5 sin (500 t + 106.20°)

B 5 + 12.5 sin (500 t + 106.20°)

C 10 + 11 sin (500 t + 106.20°)

D 10 + 12.5 sin (500 t + 10°)

ANS:A - 10 + 12.5 sin (500 t + 106.20°)

Use trigonometric theorem.