Graphs of Sine and Cosine

Given : Y=5cos(4x-60') + 3

Name the
amplitude:5
period:
phase shift:
vertical displacement: up 3
domain:
range:

Can anyone help me "how" to get the others

Y = bcos(k(x-c))+a
Y = 5cos(4x-60')+3

amplitude = |b| = 5
period = 2pi/k = 2pi/(1/4) = 8pi
phase shift = c = 15
vertical shift = a = 3