## Table of Contents

Synonyms

Etymology

### 1. arccos

**noun.** the inverse function of the cosine; the angle that has a cosine equal to a given number.

#### Synonyms

- circular function
- arccosine
- inverse cosine
- trigonometric function

#### Etymology

- arc- (English)
- cos (English)

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### Sentences with arccos

1. **Noun, singular or mass**

Finding the **arccos** of the value will result in the measurement of the angle.

2. **Adverb**

In the above example, **arccos** 1/2 = 60 degress or pi / 3 radians, so the equation becomes 2x = 60.