File:Tan.half.svg

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English: This illustrates a geometric argument for the tangent half-angle formula. This argument was pointed out by Henning Makholm on the stackexchange web site in a comment at this URL: http://math.stackexchange.com/questions/113451/show-that-tan-3x-frac-sin-x-sin-3x-sin-5x-cos-x-cos-3x-cos-5
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Author Michael Hardy

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I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

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Date/TimeThumbnailDimensionsUserComment
current02:18, 6 May 2013Thumbnail for version as of 02:18, 6 May 2013846 × 558 (10 KB)Soap (talk | contribs)Fixing label pointed out to me by another user
00:22, 14 December 2012Thumbnail for version as of 00:22, 14 December 2012846 × 558 (10 KB)Michael Hardy (talk | contribs)A geometric derivation of a tangent half-angle formula.
22:24, 27 February 2012Thumbnail for version as of 22:24, 27 February 2012720 × 297 (7 KB)Michael Hardy (talk | contribs)This illustrates a geometric argument for the tangent half-angle formula. This argument was pointed out by Henning Makholm on the stackexchange web site in a comment at this URL: http://math.stackexchange.com/questions/113451/show-that-tan-3x-frac-sin-x-

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