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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The MU Key on a Four Function Calculator and Programs for the DM42/HP 42S

  The MU Key on a Four Function Calculator and Programs for the DM42/HP 42S Not too long ago, I purchased this very colorful, four funct...