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{
"name": "acos",
"type": "function",
"groups": ["Math"],
"description": "Returns the inverse cosine of a value in radians.",
"arguments": [{
"arg": "value",
"description": "cosine of an angle in radians"
}],
"examples": [{
"expression": "acos(0.5)",
"returns": "1.0471975511966"
}],
"tags": ["cosine", "inverse", "radians"]
}