Amplitudes and Period
The amplitude is half the distance between
the maximum and minimum values of the graph.
The period is the length of 1 cycle of the graph.
Example y=sin x has amplitude 1 and a period of 360˚
Example y=2sinx has amplitude 2 and a period of 360˚
Example y=sinx+1 has amplitude 1 and a period of 360˚
Example y=sin2x has amplitude 1 and a period of 180˚
This has 2 cycles every 360˚
Example y=cos5x has amplitude 1 and a period of 72˚
Remember
To find the period, divide 360˚ by the number before the x.
The number before the x tells you how many cycles will occur.