10809
EXPLORE
LATEST
ABOUT
AUTHORING AREA
PARTICIPATE
Your browser does not support JavaScript or it may be disabled!
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
Share:
Embed Interactive Demonstration
New!
Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site.
More details »
Download Demonstration as CDF »
Download Author Code »
(preview »)
Files require
Wolfram
CDF Player
or
Mathematica
.
Related Demonstrations
More by Author
Sine, Cosine, Tangent and the Unit Circle
Eric Schulz
Sine, Cosine, and Tangent Using Ratios of Sides of a Right-Angled Triangle
George Beck
Two Visual Proofs of a Basic Trigonometric Identity
Izidor Hafner
A Proof of the Difference Identity for Cosine
Eric Schulz
Cosine and Sine Identities with Dihedral Transformations
Gerry Harnett
De Moivre's Theorem for Trig Identities
Michael Croucher
Cofunction Identities for Sine and Cosine
Chris Boucher
sin(t)=cos(pi/2-t)
Jon Perry
Spherical Triangle Solutions
Hans Milton
Machin's Computation of Pi
Izidor Hafner
Related Topics
Trigonometric Functions
High School Algebra II and Trigonometry
High School Mathematics
Browse all topics
Related Curriculum Standards
US Common Core State Standards, Mathematics
HSF-TF.C.9
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to
Mathematica Player 7EX
I already have
Mathematica Player
or
Mathematica 7+