G.SRT.6 Trig ratios

Topic:
Ratios
This applet is designed to help you discover the right triangle trig ratios. You will need to know the opposite, hypotenuse, and adjacent sides of the triangle with respect to a given angle. Keep B a 90 degree angle. Move the other points and pay attention to the AH,OH,OA, and sin(a),cos(a), tan(a). If you move the points so that B is not 90 degrees, what do you notice?
What do you notice about about the ratios AH, OA, OH and the sin, cos, and tan of the angle? Does it work if you change the triangle dimensions? Does it work if you change angle so it is not 90 degrees?