A right triangle's equation for sides is [tex]c= \sqrt{ a^{2} +b^{2} } [/tex] Not as bad as it sounds C is your hypotinuse a is one side length by the right angle b is the other side length
EX: If you are given a triangle with the sides 3in and 4in and you were to find the hypotenuse Simply put them in [tex] \sqrt{ 3^{2} +4^{2} } [/tex] Square [tex] \sqrt{9+16} [/tex] Add [tex] \sqrt{25} [/tex] and get the final answer of 5