sema-docs 1.21.0

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

Sine (argument in radians).

```sema
(sin 0)       ; => 0.0
(sin pi)      ; => ~0.0
```