Graphing Trigonometric Functions
The sine function y = sin x and cosine function h = cos x are periodic functions. The fundamental period of each is 360ΒΊ or 2Ο. To plot the graph of a sine or cosine function, follow these steps:
- Find the values of the function at the points x = 0 and x = 2Ο.
- Find the values of the function at some arbitrary points between 0 and 2Ο.
- Find x when y = 0 or h = 0.
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