Mathematics Describing the Real World: Precalculus and Trigonometry
Mathematics Describing the Real World: Precalculus and Trigonometry
Law of Cosines (1x22)
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Given three sides of a triangle, can you find the three angles? Use a generalized form of the Pythagorean theorem called the law of cosines to succeed. This formula also allows the determination of all sides and angles of a triangle when you know any two sides and their included angle.