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| Module: | Prelude |
|---|---|
| Function: | atan |
| Type: | Floating a => a -> a |
| Class: | Floating |
| Description: | inverse tangent |
| Related: | acos, acosh, asin, asinh, atanh, cos, cosh, sin, sinh, tan, tanh |
| Keywords: | tangent inverse, trigonometry |
| MATHWORLD | Inverse Tangent |
Input: atan (pi/4)
Output: 0.665774