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New page: '''Cosine''' is a trigonometric function. <math>\cos \theta = \sin \left(\frac{\pi}{2} - \theta \right) = \frac{1}{\sec \theta}\,</math> Category:Mathematics
'''Cosine''' is a [[trigonometry|trigonometric]] function.
<math>\cos \theta = \sin \left(\frac{\pi}{2} - \theta \right) = \frac{1}{\sec \theta}\,</math>
[[Category:Mathematics]]
<math>\cos \theta = \sin \left(\frac{\pi}{2} - \theta \right) = \frac{1}{\sec \theta}\,</math>
[[Category:Mathematics]]