名词
中文翻译：余割
同义词：
['cotangent', 'cotangent']
例句：
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1.The angle between two sides of a triangle is the cosecant of the angle.
三角形的两边之间的夹角是这个角的余割。
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2. The cosecant of an angle in a circle is its radius divided by its circumference.
圆内一个角的余割是它的半径除以周长。
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3.The cosecant of a right triangle is the square root of the sum of the squares of its lengths and the square of the hypotenuse.
直角三角形的余割是其两腰平方和与斜边的平方根之积。