A frequency diagram is a type of graph used to represent a continuous ... Image caption, Now draw the vertical axis and number it in regular intervals. In this example, the scale is increasing ...

The line \(y = 0.5\) crosses the graph of \(y = \sin{x}\) four times in the interval \(-360^\circ \leq \theta \leq 360^\circ\) so there are four solutions. There is a line of symmetry at \(x = 90 ...