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small edit to doc of atan; Closes PR 12039

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(cherry picked from commit 03dc212d61)
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Matthias Felleisen 2011-07-13 18:00:35 -04:00 committed by Eli Barzilay
parent 60f3e79bb8
commit 7f7618dd07
1 changed files with 2 additions and 2 deletions
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collects/lang/private/beginner-funs.rkt
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@ -73,8 +73,8 @@
"Evaluates the arcsine (inverse of sin) of a number.")
(acos (number -> number)
"Evaluates the arccosine (inverse of cos) of a number.")
(atan (number -> number)
"Evaluates the arctan (inverse of tan) of a number.")
(atan (number [number] -> number)
"Evaluates the arctan of the given number or the ratio of the two given numbers.")
(sinh (number -> number)
"Evaluates the hyperbolic sine of a number.")