The havercosine, also called the haversed cosine, is a little-used trigonometric function defined by
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(2)
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The havercosine, also called the haversed cosine, is a little-used trigonometric function defined by
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(1)
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(2)
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Weisstein, Eric W. "Havercosine." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Havercosine.html