This self checking worksheet gives the student an ordered pair. The student is to find the hypotenuse, which will aid the student in finding two of the six trig functions. I really like this worksheet for my students. This worksheet is usually assigned after they have been in Trig a couple of weeks. The students are getting re-acquainted with SOH-CAH-TOA after a long break from Geometry's short experience with SOH-CAH-TOA. They feel really good about themselves when they successfully finish and read the riddle.