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
 
 
 
 
at
Labels: , , ,

TI-60 and HP 65: Distance by Stadia Tacheometry

TI-60 and HP 65: Distance by Stadia Tacheometry Introduction The stadia calculation measures the distance from the level or theod...