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A Sine/Cosine Identity
This Demonstration looks at the trigonometric identity
. We plot the functions
(red curves),
(orange curves), and compare the plots of the functions
(black, on the left) and
(black, on the right); when
, they are the same.
Contributed by:
Jon Perry
SNAPSHOTS
RELATED LINKS
Double-Angle Formulas
(
Wolfram
MathWorld
)
PERMANENT CITATION
"
A Sine/Cosine Identity
" from
the Wolfram Demonstrations Project
http://demonstrations.wolfram.com/ASineCosineIdentity/
Contributed by:
Jon Perry
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Related Topics
Trigonometric Functions
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Related Curriculum Standards
US Common Core State Standards, Mathematics
HSF-TF.C.9