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The Doctrine Of Triangles: A History Of Modern Trigonometry/en-ca/the-doctrine-of-triangles-a-history-of-modern-trigonometry/DDCAB3BF-2F6B-4555-AD9E-A674727A0194.htmlDDCAB3BF-2F6B-4555-AD9E-A674727A0194
The Doctrine Of Triangles: A History Of Modern Trigonometry