Solution of Triangles
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High Quality Content by WIKIPEDIA articles! In trigonometry, to solve a triangle is to find the three angles and the lengths of the three sides of the triangle when given some, but not all of that information. In particular: if one knows two of the angles one can find the third by using the fact that the sum of the three must be 180°; (SSS) If one knows the lengths of the three sides, one can find the three angles by using the law of cosines; (SAS) If one knows the lengths of two of the sides and the angle between them, one can find the length of the third side by using the law of cosines;…mehr

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High Quality Content by WIKIPEDIA articles! In trigonometry, to solve a triangle is to find the three angles and the lengths of the three sides of the triangle when given some, but not all of that information. In particular: if one knows two of the angles one can find the third by using the fact that the sum of the three must be 180°; (SSS) If one knows the lengths of the three sides, one can find the three angles by using the law of cosines; (SAS) If one knows the lengths of two of the sides and the angle between them, one can find the length of the third side by using the law of cosines; (SSA) If one knows the lengths of two sides and an angle between one of those and the third side, one can find the third length and the other angles by using the law of sines, in some cases up to a choice between two possible solutions.