The Pythagorean theorem, a squared + b squared = c squared, is used to find missing side lengths in a right triangle. Solve for b, in terms of c and a.
if a triangle is 20ft high with the hypotenuse 25ft a2 c2 23.5ft b2
i don't do this traditionally i work it a very long way thats easier for me but this is my go to ex. that i show people and it is correct and easy to visualize but i hope it helps you some