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## Homework Statement

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

i = 15 sin(100π.t + 0.6)

Find the value of;

a) amplitude

b) period

c) frequency

d) initial phase angel

e) value of i when t = 2.5s

f) time when current first reaches maximum value

## Homework Equations

i=A*sin(ωτ+∅)

i = A.sin(2pi.f.t + ∅)

## The Attempt at a Solution

I understand from looking around these are the correct formula to use, is someone please able to explain how to arrive at the formula from question statement

**i = 15 sin(100π.t + 0.6)**? having some difficulties understanding the math involved. Thanks.