Question 370114
If C is the right angle then AB is the hypotenuse. With two sides of a right triangle we can use the Pythagorean Theorem to find the third side:
{{{(183)^2 = (172)^2 + (AC)^2}}}
Simplifying we get:
{{{33489 = 29584 + (AC)^2}}}
Subtracting 29584 from each side we get:
{{{3905 = (AC)^2}}}
Finding the square root of each side (and discarding the negative square root because sides of triangles cannot be negative):
{{{sqrt(3905) = sqrt((AC)^2)}}}
{{{sqrt(3905) = AC}}}
which is the exact answer. Use your calculator on the square root to find a decimal approximation.