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Coterminal angles?

  1. Apr 30, 2015 #1
    I've got my final test in trig coming up, and the one thing that I simply cannot get a handle on are, coterminal angles, specifically ones where you find coterminal angles for a negative angle, in my class they are mostly done in radians. I understand how to get all the angles of a positive radian, but not the negative. I think I am over thinking something here, it may just be that I don't exactly understand negative angles beyond the fact that you start the other way around. I hope this makes sense.
  2. jcsd
  3. Apr 30, 2015 #2


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    The rotated rays point in the same direction.

    negative half pi is cotermianl with three halves pi.
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