How to apply the pythagorean theorem to a triangle

The video tutorial explains the Pythagorean theorem, focusing on identifying the parts of a right triangle, such as the legs and hypotenuse. It demonstrates how to apply the theorem to solve for unknown sides by using the formula a^2 + b^2 = c^2. The tutorial includes a step-by-step calculation example, showing how to subtract and take the square root to find the length of an unknown side. The lesson concludes with a brief summary of the key points covered.

What steps are involved in solving for X in the equation X^2 = 15.4^2 - 6.3^2?

What is the final value of X after applying the Pythagorean theorem in the given example?