| 单词 | law of sines | 
| 释义 | law of sines1   : a law in trigonometry: the ratio of each side of a plane triangle to the sine of the opposite angle is the same for all three sides and angles   2   : a law in trigonometry: the ratio of the sine of each arc of a spherical triangle to the sine of the opposite angle is the same for all three arcs and angles   | 
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