名词
中文翻译：恒定角定律
同义词：
['law of cosines', 'law of reflection', 'law of refraction']
例句：
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1.The law of cosines states that the square of the hypotenuse is equal to the sum of the squares of the other two sides.
余弦定理表明，直角三角形的斜边平方等于另外两边平方之和。
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2. In light of the law of reflection, we can conclude that the image of a point on a mirror is its own image.
根据反射定律，我们可以得出结论，镜面上一个点的像就是它自己。
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3. The law of refraction explains how light bends when it passes from one medium into another.
折射定律解释了光线从一种介质进入另一种介质时如何弯曲。