When drawing a pie chart, a protractor will be used to draw the angles accurately. Being familiar with how to use a protractor will be helpful. Image caption, A pie chart can show collected data ...

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 ...