# Arccosine

- Hypotenuse: The side opposite the right angle "C", is the hypotenuse "c".
- Opposite Leg: The side opposite to the angle needed "A", is the opposite side "a".
- Adjacent Leg: The side opposite the hypotenuse and next to the angle needed, is the adjacent side "b".

## abbreviations

**arccos**- arccosine

## formula

\(\ arccos \theta= \frac {adjacent}{hypotenuse} \)