On the unit circle, a central angle θ in standard position intercepts

Mathematics
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On the unit circle, a central angle θ in standard position intercepts an arc that is 2 units long.  If you reflect angle θ across the y-axis to create a new angle α in standard position, what is the measure of α?

May 13th, 2015

pi-2. Our first angle is 2. Reflection about y takes angle alpha to pi-alpha.

May 13th, 2015

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May 13th, 2015
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May 13th, 2015
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