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sine rule
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sine rule

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The sine rule relates the sides and angles of a triangle, stating that the ratio of the length of each side and the sine of the angle opposite is constant.
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The sine is a function of an angle in a right-angled triangle found by dividing the length of the side opposite the angle by the length of the hypotenuse (the longest side). Sine (usually abbreviated sin) is one of the fundamental trigonometric ratios.

In trigonometry, a rule that relates the sides and angles of a triangle, stating that the ratio of the length of each side and the sine of the angle opposite is constant (twice the radius of the circumscribing circle). If the sides of a triangle are a, b, and c, and the angles opposite are A, B, and C, respectively, then the sine rule may be expressed as

a/sin A = b/sin B = c/sin C
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CFM96 calculated all angles and magnitudes using the law of sines and cosines; however, the CFM96 method can lead to ambiguity.
Forecasting mesoscale convective complex movement in Central South ... by Corfidi, Stephen F. / National Weather Digest
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