Sine and Cosine of Two Angles

A construction to show cos(A+B) = cos(A)cos(B) - sin(A)sin(B) sin(A+B) = sin(A)cos(B) + cos(A)sin(B)
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Victor Hui —

 
Resource Type
Activity
Tags
angle  angles  construction  cos  cosine  geometry  sin  sine  trig  trigonometry 
Target Group (Age)
19+
Language
English (United Kingdom)
 
 
GeoGebra version
4.0
Views
2539
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License
CC-BY-SA, GeoGebra Terms of Use
 
 
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