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The math is trigonometry but I think you would need to get a feel. It is not like you could run the math on the fly anyway. The ratio of sin above and the sin below is 1.33. More angle is more ...
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The math is trigonometry but I think you would need to get a feel. It is not like you could run the math on the fly anyway. The ratio of sin above and the sin below is 1.33. More angle is more ...