Incorporate law of sines

Take a look at: http://codepen.io/weymouth/pen/vgRJOV

https://twitter.com/gabrielweymouth/status/826890126747906048

Review the CodePen example and the linked discussion first to understand how the law of sines should affect the star-pattern generation. Then inspect the repository to find the relevant pattern entry point. Done means the requested law-of-sines behavior is incorporated and the existing pattern output still works.

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