The ramp on the back of a moving van is 3ft high and rises at an angle of 25°. how long is the ramp. round to the nearest foot.

Remember Soh Cah Toa (say it aloud, this is how I remember it) - Sin (a) = Opposite/Hypotenuse, Cos (a) = Adjacent/Hypotenuse, and Tan (a) = Opposite/Adjacent. Each of these terms is related to the angle you're working with

So for your problem:

3 ft is opposite of the angle so to calculate the hypotenuse=3/Sin (25)