Combinatorics is a part of math focused on counting principles of finite quantities. It does not really have much to do with triangles, much less the Pythagorean theorem.
You would use the Pythagorean Theorem when you are trying to determine the length of a side on a right triangle.
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You might use the Pythagorean Theorem if you are carpenter or builder. A...
Definition:Pythagorean theorem (also known as Pythagoras' theorem) is a mathematical statement about the relation among the three sides of a right triangle (right-angled triangle). It states: "In a...