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A Writer's Dictionary:

cosine Definition


Dictionary Home » Words Starting with C » correlation coefficient ... cosmically » cosine


cosine
noun
    1. trig.
      In a right-angled triangle: a function (noun 4), that is the ratio of the length of the side adjacent to the angle to the length of the hypotenuse.
Etymology: 17c: from co-, short for complement 4 + sine.



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