Angles of a right triangle

A right triangle is a triangle in which one of the angles is 90 degrees.

Online calculators allow you to determine the values of the other two angles if the lengths of both legs are known or if the length of one leg and the hypotenuse are known. The legs are the two smaller sides of a triangle, where the 90-degree angle is the right angle. The hypotenuse is the largest side of a right triangle, opposite the right angle.