Friday, August 29, 2014

Why sin^2 x + cos^2 x = 1

Why does sin^2 x + cos^2 x = 1?  Find out in this video. 
 
 
- Eddie
 
 
 
 
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Retro Review: HP 65

Retro Review: HP 65 Quick Facts Company: Hewlett Packard Years: 1974 - 1977 Type: Scientific, RPN (Reverse Polish Notation) Mem...