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From Stewart Precalculus 5th edi, P407

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I am not sure what to do here, in the textbook, Steward didn't provide any example as to finding the terminal point when the distance $t$ is an integer. I know how to find when the distance is in terms of $\pi$.

Am I supposed to replace 1 with $\frac{\pi}{3}$, 2 with $\frac{2\pi}{3}$ and give an estimation?

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Looking at the figure you can see that he has labels around the edges of the circle. The numbers $1,2,3,4,5,$ and $6$. The terminal point when $t=1$ would correspond to the location labelled with a $1$. The angle at that point is exactly $1$ radian which is about $57$ degrees. By counting the number of tics to get to $1$ you can determine how many radians each tick is worth and then use that to answer questions that involve a fractional number of radians such as $t=2.5$.

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