perplexus.info :: Shapes : Minimizing Perimeter

Minimizing Perimeter (Posted on 2015-03-04)

Let ABC be a triangle with integral side lengths such that angle A=3 * angle B. Find the minimum value of its perimeter.

No Solution Yet Submitted by Danish Ahmed Khan

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re(2): A triangle that works, may not be minimum (spoiler)

| Comment 9 of 15 |

I don't have time to investigate right now, but each triangle contains a perfect cube.

The triple and quadruple angle formulas for sin(3B) and sin(4B) each contains a sin(B)^3

Posted by Jer on 2015-03-04 12:32:22

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