National 5; Working with the graphs of trigonometric functions Example. Trigonometric graphs can be sketched when you know the amplitude, period, phase and maximum and minimum turning points.

The graph of \(y = \sin{\theta}\) has a maximum value of 1 and a minimum value of -1. The graph has a period of 360°. This means that it repeats itself every 360°.

The US minimum wage, which started at 25 cents in 1938, has been raised by Congress 22 times. Scroll over CNN’s interactive chart to see the minimum wage by year, through history.