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WildTrig10: Geometry of circles with rational trigonometry

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Uploaded by on Dec 9, 2007

We derive some of the most fundamental facts about a circle using rational trigonometry---the Subtended spread theorems and the Equal products theorem.

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  • If I've understood correctly, the angles x and 180+x have the same representation if represented as spreads. Is it possible to deal with each of them separately using RT?

    Thanks!

  • @brangelito The spread is measured between lines, not rays. That is an important distinction that you must get used to. However later on, the Triangle Spread Rules (also discussed in this video series in WT58 and following) deal with the distinction between acute and obtuse sectors in the context of triangles.

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  • Norm, your enthusiasm is infectious!  This is my TV

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  • These videos are so intoxicating.. Unfortunately I'm taking Mech. Eng. classes here in Texas and don't have time to watch them all :_( but over Winter break I will definately run through all of your videos.

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