17: Trigonometric Functions
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- 17.2: sin, cos, and tan as functions
- We now turn to function theoretic aspects of the trigonometric functions defined in the last section. In particular, we will be interested in understanding the graphs of the functions y=sin(x) , y=cos(x) , and y=tan(x) . With an eye toward calculus, we will take the angles x in radian measure.