Once we find the ratios we use our Scientific Calculators to find the ?size of the angle.  In order to do this you must do the following: 

(MAKE SURE THE CALCULATOR IS SET TO DEGREES!!!!)

1) Choose one of your trig ratios

2) Enter the ratio into your calculator

3) Press the 2nd key(or Shift key) and then the appropriate trig ?function.

This gives you the size of the angle.

Homework sheet attached.