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Proofs Without Words Sine of a Difference
Author:
VTMike
Topic:
Sine
,
Trigonometry
Move point B (along the circumference of the circle) and point D (along the base) to see how the figure changes.
GeoGebra
Use this, in conjunction with the paper-prompt, to make sense of this proof.
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polygon ring
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สมการเชิงเส้น HAPPY
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