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Proof Without Words: An Arctangent Identity
by Hasan Unal (Yildiz Technical University, Turkey)
This article originally appeared in:Mathematics Magazine
February, 2009
Subject classification(s): Trigonometric Identities | Trigonometry | Geometry and Topology
Applicable Course(s): 2.2 Trigonometry
An arctangent identity is presented visually.
A pdf copy of the article can be viewed by clicking below. Since the copy is a faithful reproduction of the actual journal pages, the article may not begin at the top of the first page.
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