cosecant - WordReference.com Dictionary of English

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cosecant

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Concise Oxford English Dictionary © 2008 Oxford University Press:
cosecant /kəʊˈsiːk(ə)nt, -ˈsɛk-/

▶noun Mathematics the ratio of the hypotenuse (in a right-angled triangle) to the side opposite an acute angle; the reciprocal of sine.

– origin C18: from mod. L. cosecant-, from co- + L. secant-, secare ‘to cut’; cf. secant.

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