AC circuit voltage can be described using a sine wave with the equation??

[Andrew Younger]

Hi I am having a bit of trouble with a question and hoping I may be able to get a few pointers in the right direction.

The question is:
In an AC circuit the voltage can be described using a sine wave with the equation: v = 150sin (60 pi t + 0.6) V

I need to work out
a. the frequency
b. the amplitude
c. the relative phase

I know that the amplitude is 150v so that is (b) taken care of, I am now unsure how to work out the following despite scouring the internet and my reading material. Does anyone know what the numbers in the brackets stand for?

Thanks

 

[Alec_t]

v = amplitude x sin((2 x pi x frequency x time) + phase).
Compare that equation with the one you have been given.
Welcome to EP.

 

[Kabelsalat]

Here is the output curve, compared with a similar one without phase shift:

It is much easier to understand by seeing the function curve.

 

[Laplace]

Does anyone know what the numbers in the brackets stand for?

The quantity in the parentheses is given in radians. There are 2π radians in 360°. So are you expected to give the frequency in radian measure or in Hz? Phase shift in radians or degrees?