Respuesta :
The triangle to solve for has a leg or 12 feet, hypotenuse of 20 feet, so solve for Pythagoras [tex] a^{2} + b^{2} = c^{2} [/tex] for a
[tex]a = \sqrt{c^{2} -b^{2}} [/tex]
a = 16 feet
[tex]a = \sqrt{c^{2} -b^{2}} [/tex]
a = 16 feet