Sinusoids
The function
y = a sin(x)
is graphed for a from 0.1 to 1. The parameter a affects the amplitude.
The function
y = 0.75 sin(bx)
is graphed for b from 0.2 to 1. The parameter b affects the period.
The function
y = 0.75 sin(x+c)
is graphed for c from 0.2 to 2. The parameter c affects the phase angle.