1. Jan 11, 2005

### aisha

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?

2. Jan 11, 2005

### vincentchan

completly correct...
good job....