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Spinning Out Sine and Cosine
Imagine a point that starts at
and rotates counterclockwise on the unit circle. If
is the length (in radians) of the arc on the circle between
and the point, then as the point moves around the circle its
and
coordinates are the cosine and sine of
.
Contributed by:
Bruce Atwood
(Beloit College) and
Stan Wagon
(Macalester College)
After work by: Ed Packel and Stan Wagon in
Animating Calculus: Mathematica Notebooks for the Laboratory
THINGS TO TRY
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RELATED LINKS
Cosine
(
Wolfram
MathWorld
)
Sine
(
Wolfram
MathWorld
)
PERMANENT CITATION
"
Spinning Out Sine and Cosine
" from
the Wolfram Demonstrations Project
http://demonstrations.wolfram.com/SpinningOutSineAndCosine/
Contributed by:
Bruce Atwood
(Beloit College) and
Stan Wagon
(Macalester College)
After work by: Ed Packel and Stan Wagon in
Animating Calculus: Mathematica Notebooks for the Laboratory
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Related Topics
Trigonometric Functions
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Related Curriculum Standards
US Common Core State Standards, Mathematics
HSF-IF.C.7
HSF-TF.A.2
HSF-TF.A.3
HSF-TF.A.4
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