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---
title: The Law of Sines
localeTitle: 正弦律
## 正弦律
正弦定律仅适用于直角三角形。当你有两个或两个以上的边和至少一个相应的角度来解决你的遗漏方。
等式是：
Sin（A）/ a = Sin（B）/ b = Sin（C）/ c
#### 更多信息：
https://www.mathsisfun.com/algebra/trig-sine-law.html