I converted the given into degrees first and got 225 degrees. Then I sketched this in a circle with cartesian planes and saw that the reference angle =45 degrees so I used the special triangle 45-90-45 Since sec=1/cos-> cos is negative in the 3rd quadrant so for this question when I evaluated I got my answer to be -square root 2 is this right?(adsbygoogle = window.adsbygoogle || []).push({});

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# Homework Help: Check please sec (5pi/4)

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