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arc cosine |
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arc cosine [′ärk ′kō‚sīn] (mathematics) Also known as anticosine; inverse cosine. For a numberx, any angle whose cosine equalsx. For a numberx, the angle between 0 radians and π radians whose cosine equalsx; it is the value atxof the inverse of the restriction of the cosine function to the interval between 0 and π. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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