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Line 1: − The '''cosecant''' is a [[trigonometric function]] describing the [[ratio]] of the [[hypotenuse]] to the opposite side in a [[right triangle]]. It is often abbreviated as ''cosec'' or ''cose''. − <math>\csc \theta = \sec \left(\frac{\pi}{2} - \theta \right) = \frac{1}{\sin \theta}\,</math> − − [[Category:Trigonometry]]
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