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  1. Law of Cosines - Georgia State University

    Law of Cosines The law of cosines for calculating one side of a triangle when the angle opposite and the other two sides are known. Can be used in conjunction with ...

    hyperphysics.phy-astr.gsu.edu/hbase/lcos.…2016-10-26
  2. Law of cosines - Wikipedia

    In trigonometry, the law of cosines (also known as the cosine formula or cosine rule) relates the lengths of the sides of a triangle to the cosine of one of its angles.

    https://en.wikipedia.org/wiki/Law_of_cosines
  3. Law of Cosines -- from Wolfram MathWorld

    This law can be derived in a number of ways. The definition of the dot product incorporates the law of cosines, so that the length of the vector from to is given by

    mathworld.wolfram.com/LawofCosines.html
  4. Spherical law of cosines - Wikipedia

    In spherical trigonometry, the law of cosines (also called the cosine rule for sides) is a theorem relating the sides and angles of spherical triangles, analogous to ...

    https://en.wikipedia.org/wiki/Spherical_law_of_cosines
  5. The law of cosines. Topics in trigonometry - TheMathPage

    And so using the Laws of Sines and Cosines, we have completely solved the triangle. The Law of Cosines is also valid when the included angle is obtuse.

    www.themathpage.com/aTrig/law-of-cosines.htm
  6. Law of Cosines: Formula and examples of the law of cosines ...

    Law of cosines formula to find the side or the angle in a triangle. Video tutorial, Model and practice problems plus a free worksheet with answer key!.

    www.mathwarehouse.com/trigonometry/law-of-cosines-formula-examples.php
  7. Solving for a side with the law of cosines (video) | Khan ...

    Learn how to use the law of cosines to find the missing side length of a triangle when given two side lengths and the contained angle measure.

    https://www.khanacademy.org/.../v/law-of-cosines-example
  8. Law of Cosines Formula - Math@TutorVista.com

    The law of cosines is a formula that associates the three sides of a triangle to the cosine of a specified angle. This formula allows us. To determine the side ...

    math.tutorvista.com/trigonometry/law-of-cosines.html
  9. Solve triangles using the law of cosines (practice) | Khan ...

    Solve missing triangle measures using the law of cosines.

    https://www.khanacademy.org/.../law-of-cosines-geo/e/law_of_cosines
  10. The Law of Cosines - Math is Fun - Maths Resources

    The Law of Cosines. The Law of Cosines (also called the Cosine Rule) is very useful for solving triangles: It works for any triangle:

    www.mathsisfun.com/algebra/trig-cosine-law.html
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