What do you think the graph of \(y = \cos 2x^\circ\) would look like ... point when \(y = - 1\) The graph looks like: Now try the example questions below.

In a function such as sine or cosine, we could also have a translation of the form: \(y = \sin (x - a)^\circ\) where \(a\) is called the phase angle. This is when the graph of the function has ...

Graphs of Sine and Cosine 1.2 An applet illustrating how the graphs of sine and cosine are related ... how the tangent to a parabola is obtained through successive secant lines. Functions with Corners ...