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Date: 19-5-2018
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Date: 7-8-2019
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Date: 5-9-2019
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The coversine is a little-used entire trigonometric function defined by
(1) |
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(2) |
where is the versine and is the sine.
The coversine can be extended to the complex plane as illustrated above.
Its derivative is given by
(3) |
and its indefinite integral by
(4) |
REFERENCES:
Abramowitz, M. and Stegun, I. A. (Eds.). Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing. New York: Dover, p. 78, 1972.
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