Law of Sines

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Large movable triangle with pivots on two angles that can magnetically attach to a white board


  • Laser cut triangle.
  • Hardware to keep it together including magnets to fasten to white board.


Kyle’s students had trouble understanding how in the law of sines where sin(A)/a=sin(B)/b=sin(C)/c, it is possible for there to be two solutions for B and C with a fixed A. He then had his students build their own models to show the conditions where there is only one solution. Click on the link to read more:


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