Solving a triangle ЁЯУР using cosine rule #maths #trigonometry #mathematics #foryou
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тБгThe cosine rule, also known as the law of cosines, relates all 3 sides of a triangle with an angle of a triangle. It is most useful for solving for missing information in a triangle. For example, if all three sides of the triangle are known, the cosine rule allows one to find any of the angle measures.
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