SOLUTION: How do I find the exact trigonometric function of sec 450?

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Question 537562: How do I find the exact trigonometric function of sec 450?
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
 

450° has reference angle of 90°.  The secant is 1 over the
cosine.  The cosine of 90° is 0, and 1 over zero is undefines,
so sec(450°) is undefined.

Edwin