cosine

CEFRB2

/ˈkəʊ.saɪn/

noun

Türkçe translations

Translating…

In plain English

  1. 01

    noun

    A mathematical function used to calculate relationships in a right triangle.

  2. 02

    noun

    Extra detail

    In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse. Symbol: cos

Examples

  • The functions sine and cosine take values between -1 and 1 (-1 and 1 included).

  • The sine and cosine functions both satisfy this property.

At a glance

Sits at B2 on the CEFR scale

Senses
2
Parts of speech
1

Also pronounced

  • /ˈkəʉ.sɑɪn/
  • /ˈkoʊ.saɪn/

Deep Dive

More examples

In context

  • "Eh? Is the tangent cosine divided by sine?" "Other way round!"

Quick test

Two questions on this entry. Nothing is scored.

Question 1 · Quick check

To calculate the angle, we need the blank of the adjacent side over the hypotenuse.

Practise this properly in the app, where the word comes back before you forget it.

Nearby

Origin

noun

From co- + sine, short for complementi sinus in Latin, meaning “sine of the complement”. Doublet of cosinus.