Question 462018
Pythagorean Theorem:
{{{a^2+b^2=c^2}}} a and b are legs, c is the hypotenuse. This formula is used anytime you are given a right triangle with one missing side length.
{{{12^2+b^2=15^2}}} Simplify
{{{144+b^2=225}}} Subtract 144 from both sides.
{{{b^2=81}}} take the square root of both sides.
{{{b=9}}}