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Re:Show HN: Global sailing navigation simulator using real w... by smartinspereira on Saturday June 27, 2020 @09:17AM (#23661675)
you just need to know that there are 360 degree in a circle. now do:

- count the segment dividers and divide 360 by that amount, let’s call this X.

- count at which divider the pointer is pointing, multiply that by X and be good.

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