Question 619829
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Hi,
sec &#952; = 2 = 1/cos&#952; 
   cos&#952; = 1/2,  &#952; is 60°, 300°
thought the following (cosx, sinx) summary may be helpful in Your studies:
<img src="http://www.math.ucsd.edu/~jarmel/math4c/Unit_Circle_Angles.png">