File:20170707 cos(half A) using direction cosines 01.png

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Description	Cartesian geometry in 2 dimensions illustrating cos(A/2) using direction cosines.
Source	Own work
Date	July 8, 2017.
Author	ThaniosAkro
Permission (Reusing this file)	public domain

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	11:49, 8 July 2017		1,908 × 1,647 (163 KB)	ThaniosAkro (discuss \| contribs)	{{Information \|Description=Cartesian geometry in 2 dimensions illustrating cos(A/2) using direction cosines. \|Source={{own}} \|Date=July 8, 2017. \|Author=ThaniosAkro \|Permission=public domain }}

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Horizontal resolution	59.06 dpc
Vertical resolution	59.06 dpc