# Use the properties of inverse functions to find the exact value of the expression

Arctan(tan(5pi/3))

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Use the properties of inverse functions to find the exact value of the expression

Arctan(tan(5pi/3))

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0

```
sage: arctan(tan(pi/5)).simplify()
1/5*pi
```

Asked: **
2012-02-23 13:18:13 -0500
**

Seen: **555 times**

Last updated: **Feb 23 '12**

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