sema-docs 1.20.3

Canonical structured documentation for Sema builtins/special forms; powers LSP hover/completion and REPL apropos
Documentation 
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---
name: "math/tan"
module: "math"
section: "Trigonometry"
---

Tangent (argument in radians).

```sema
(math/tan 0)       ; => 0.0
(math/tan (/ pi 4)); => ~1.0
```