- Thread starter
- #1

totally lost and confused with this question:

A machine is subject to two vibrations at the same time.

one vibration has the form: 2cosωt and the other vibration has the form: 3 cos(ωt+0.785). (0.785 is actually expressed as pi/4)

determine the resulting vibration and express it in the general form of: n cos(ωt±α)