Question 1073218
For what values of theta,between 0 and 360, does sec of theta equal -2/root 2?
<pre>Since sec is negative (< 0), cos is also negative (< 0).
Hence, {{{theta}}} is in the 2nd and 3rd quadrants, and has values of: {{{highlight_green(matrix(1,3, 135^o, and, 225^o))}}}
Ikleyn(11508) is correct. I did miss one of the values: the one in the 2nd quadrant.