How to Pronounce "cosine"
word
ˈkəʊ.saɪn
KOH-syn
kˈəʊsaɪn
KOH-syn
Definition
In mathematics, cosine is a function that gives the ratio of the length of the side adjacent to an angle to the length of the hypotenuse in a right triangle. It is commonly used in trigonometry and is written as 'cos'.
IPA Transcription
American English
ˈkəʊ.saɪn
British English
kˈəʊsaɪn
Simplified Pronunciation
US
KOH-syn
UK
KOH-syn
Listen in Context
The cosine of 0 degrees is 1.
In trigonometry, we often calculate the cosine of an angle.
You can use a calculator to find the cosine value.
What's the cosine of 60 degrees again? Oh, it's 0.5.