## Leg of a Right Triangle

### In a right triangle, the leg refers to one of the two sides that form the right angle

In a right triangle, the leg refers to one of the two sides that form the right angle. Each leg is adjacent to the right angle and extends from the vertex of the right angle to connect with another external vertex or to form the hypotenuse, which is the longest side of the triangle and is opposite the right angle.

The legs of a right triangle are usually denoted as “a” and “b.” The Pythagorean theorem, which is a fundamental theorem in geometry, relates the lengths of the legs and the hypotenuse. It states that the square of the hypotenuse is equal to the sum of the squares of the two legs. Mathematically, this can be represented as follows:

c² = a² + b²

Where c represents the length of the hypotenuse, and a and b represent the lengths of the legs.

The legs of a right triangle have various applications in mathematics, physics, and engineering. For example, in trigonometry, the ratios of the lengths of the legs with respect to the hypotenuse can be used to define trigonometric functions such as sine, cosine, and tangent. These functions play a crucial role in solving problems involving angles and distances.

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