law of cosines

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Definitions of law of cosines words

noun law of cosines a law stating that the square of a side of a plane triangle is equal to the sum of the squares of the other two sides minus twice the product of the other sides multiplied by the cosine of the angle between them. 1
noun law of cosines a law stating that the cosine of an arc of a spherical triangle equals the sum of the product of the cosines of the other two arcs added to the product of the sines of the other two arcs multiplied by the cosine of the angle between them. 1
noun law of cosines (trigonometry) A statement that relates the lengths of the sides of a triangle to the cosine of one of its angles. 0

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This term is known only to a narrow circle of people with rare knowledge. Only 5% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

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