Nagele's rule

例句：

1. 1. The Nagel's rule states that the length of a line is inversely proportional to the square of its slope.
   奈格尔法则指出，线段的长度与其斜率的平方成反比。
2. 2. In mathematics, the Nagel's rule is used to solve equations involving trigonometric functions.
   在数学中，奈格尔法则用于解决涉及正弦函数的方程。
3. 3. The Nagel's rule has been proven to be accurate for many practical applications.
   奈格尔法则已被证明在许多实际应用中是准确的。