Math Help - Help on an Exercise in Right Triangle Trig

The exercise asks me to construct an appropriate triangle to complete the table. ( , )

Function	(deg)	(rad)	Function Value
sec

I'm just drawing an absolute blank on how I would do this even though I feel it shouldn't be that hard. I think I'm suffering from information overload a little.

Note that sec(x) = 1/cos(x), and that pi = 180 degrees.

Can you finish?

Ok, I got it. Thank you. I don't fully understand why the book suggested this particular example - I'm sure after a while I will better see how this all fits together, but it had just walked me through an example where I was using trig functions to find lengths of the sides of triangles, and here I'm using them like I was with the unit circle in the previous section.