need help with this can you provide any light on it.....

The instantaneous value of current, i amp, at t seconds is given by

i= 15 sin (100 pi t + 0.6)

Find

the amplitude

the period

the frequency

the initial phase angle when t =0 expressed in both radians and degrees

the value of i when t=2.5

the time in milliseconds when the current first reaches its maximum value

I need all the help I can get thanks