1. Convert Online⇨
2. Mathematics⇨
3. Trigonometry⇨
4. Inverse Cosine

{
  "topic": "inverse-cos",
  "function": "cos<sup>−1</sup>",
  "function_desc": "Inverse Cosine",
  "x_symbol": "x",
  "x_desc": "adjacent_side/hypotenuse",
  "category": "Trigonometry",
  "formula": "θ = cos<sup>−1</sup>(Length_of_Adjacent_side / Length_of_Hypotenuse)",
  "formula_in_js": "Math.acos(x)",
  "description": "Inverse Cosine cos<sup>−1</sup>() is used to find the angle for a given ratio of the length of the adjacent side to the length of the hypotenuse, in a right angled triangle.",
  "template": "trigonometry_inverse_function"
}