How do you find a when b and c are known in phythagorean theorem?

In the Pythagorean theorem, if you have the lengths of sides ( b ) and ( c ) (where ( c ) is the hypotenuse), you can find ( a ) using the formula ( a = \sqrt{c^2 - b^2} ). Simply square the length of the hypotenuse ( c ), subtract the square of side ( b ), and then take the square root of the result to find ( a ). This applies only if ( c ) is greater than ( b ).