Question 376374
<pre>
Angle            Quadrant    Reference angle
0 < &#952; < 90       I           &#952;
90 < &#952; < 180     II          180 - &#952;
180 < &#952; < 270    III         &#952; - 180
270 < &#952; < 360    IV          360 - &#952;
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