According to the Pythagorean theorem,
a2 + b2 = c2 , where " c " is the hypotenuse of a right triangle, and " a " and " b " are its legs.
They tell us that b = √77 and c = 12 . Plug these values in for b and c .
a2 + √772 = 122 This is...
a2 + 77 = 144 Subtract 77 from both sides of the equation.
a2 = 67 Take the positive square root of both sides.
a = √67
a ≈ 8.19
According to the Pythagorean theorem,
a2 + b2 = c2 , where " c " is the hypotenuse of a right triangle, and " a " and " b " are its legs.
They tell us that b = √77 and c = 12 . Plug these values in for b and c .
a2 + √772 = 122 This is...
a2 + 77 = 144 Subtract 77 from both sides of the equation.
a2 = 67 Take the positive square root of both sides.
a = √67
a ≈ 8.19