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So, I have an arc that's part of a circle that I must "travel across".

The circle has a radius of $15$ - a circumference of $94.248$ (rounding). The arc length in question is equal to $15.708$.

Now, normally, you could sort of walk along the arc, turning with it. But, if I could only travel straight, I need to know how I would get from one part of the arc to $15.708$ units later in the arc of the circle (only being able to travel straight, or make $90$ degree turns).

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    **[Very related.](http://math.stackexchange.com/questions/12906)**2011-12-06

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