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Parabola locus (1 Viewer)

enigma_1

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What process do I need to use to find b?
 
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You can use various approaches. Use properties of equilateral triangles - all equal sides, equal angles

Hint: trigonometry.
 
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Use the fact that the angles in an equilateral triangle are equal.



What is alpha?

Also find the length of SN. (A=N in diagram)
 
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If i'm not mistaken you should get
 
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