. . Properties of the sine function From the graph of y = sin , we observe the following properties of sine function: (i) There is no break or discontinuities in the curve. The sine function is continuous.
(ii) The sine function is odd, since the graph is symmetric with respect to the origin. (iii) The maximum value of sine function is and occurs at x = and the minimum value is - and occurs at x = . In otherwords, −≤ sin x for all x Î .