how is the law of cosines related to the pythagorean theorem
Law of cosines The law of cosines generalizes the Pythagorean theorem, which holds only for right triangles: if the angle γ is a right angle (of measure 90° [degrees], or π/2 radians), then cos γ = 0, and thus the law of cosines reduces to the Pythagorean theorem:
Pythagorean theorem In mathematics, the Pythagorean theorem, also known as Pythagoras' theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. The theorem can be written as an equation relating the lengths of the sides a, b and c, often called the "Pythagorean equation":[1]
Pi Ï€ is commonly defined as the ratio of a circle's circumference C to its diameter d:[9]
Limit of a function (the Dirichlet function) has no limit at any x-coordinate.