WY is the hypotenuse of the triangle. Since you are given an angle and the side opposite of that angle, you can use sine to solve for WY. Hopefully you already know that Sine=opposite/hypotenuse. Plug in the values you already know. Sin36=5/WY. We need to isolate the WY to solve for it. To do this multiply both sides by WY to get it out of the denominator. WYSin36=5. Now isolate WY by dividing both sides by Sin36. WY=5/Sin36. Plug this into your calculator to get WY=8.5
