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arc tangent |
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arc tangent [¦ärk ′tan·jənt]
(mathematics) Also known as antitangent; inverse tangent. For a numberx, any angle whose tangent equalsx. For a numberx, the angle between -π/2 radians and π/2 radians whose tangent equalsx; it is the value atxof the inverse of the restriction of the tangent function to the interval between -π/2 and π/2. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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