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add vercos(), avercos(), covercos(), acovercos()

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Improved trig help files.

Added new vercos(x, [,eps]) for versed cosine and covercos(x, [,eps])
for inverse versed cosine.

Added new avercos(x, [,eps]) for inverse versed cosine and acovercos(x, [,eps])
for inverse coversed cosine.
This commit is contained in:
Landon Curt Noll
2023-09-06 00:52:37 -07:00
parent ea5b5e0b53
commit fdbf53d7e8
28 changed files with 1218 additions and 59 deletions
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5
help/aversin
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@@ -11,11 +11,10 @@ TYPES
return real
DESCRIPTION
Returns the inverse versed sine of x to a multiple of eps with error less in
Returns the inverse versed trigonometric sine of x to a multiple of eps with error less in
absolute value than .75 * eps.
The inverse versed sine function is sometimes called avers, sometimes called aver,
may be defined as:
This function is sometimes called avers, or arcversin, is equivalent to:
aversin(x) = acos(1 - x)