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Trace the Cosine Function
作者:
Underground Mathematics
,
Auston B Cron
主題:
餘弦
This is a simple demonstration of the cosine function being traced from the unit circle. Click Start to animate. Select either sine or cosine.
GeoGebra
This comes from
https://undergroundmathematics.org/trigonometry-triangles-to-functions/from-stars-to-waves
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