How to pronounce cosine
Say it like KOH-syne. Cosine has two syllables, and the main stress falls on the first one (KOH).
Click the play button next to American or British to hear how to pronounce cosine. Choose Slow to hear each sound clearly.
- KOH
- syne
- Main stress
- Lighter stress
- Unstressed
Cosine pronunciation, sound by sound
Read the parts left to right, then blend them together without pausing.
- KOHSay this part loudest and longest. The vowel is the "o" in go.
- syneKeep this part quick and light. The vowel is the "i" in time.
American vs British pronunciation of cosine
- The long o starts further forward in British English, closer to "uh-oo" than the American "oh".
British respelling: KOH-syne.
What does cosine mean?
- 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
Where does cosine come from?
From co- + sine, short for complementi sinus in Latin, meaning “sine of the complement”.
Words that rhyme with cosine
Practicing rhymes is a quick way to lock in the vowel sound of cosine.
Questions about saying cosine
How do you pronounce cosine?
Say KOH-syne. The American pronunciation is /ˈkoʊsaɪn/. In British English it is /ˈkəʊsaɪn/. Press play above to hear it at normal speed or slowly.
How many syllables are in cosine?
Cosine has two syllables, and the main stress falls on the first one (KOH). Broken into parts: KOH · syne.
Is cosine pronounced differently in British English?
Yes. The long o starts further forward in British English, closer to "uh-oo" than the American "oh". The British form is /ˈkəʊsaɪn/ (KOH-syne).