noun
Uncommon
sine
syn
Sine (noun) means In trigonometry, a function of an angle giving the ratio of the length of the opposite side to the hypotenuse in a right triangle. Example: “The sine of 90 degrees is 1.”
noun
1
In trigonometry, a function of an angle giving the ratio of the length of the opposite side to the hypotenuse in a right triangle.
"The sine of 90 degrees is 1."
How to use sine
Learner’s notesIn plain EnglishA trigonometric function used to relate angles to the sides of a right triangle.
Common pairings
sine wave
sine function
sine curve
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Word forms
- Plural
- sines
Fill the gap
Can you complete this real example?
The _____ of 90 degrees is 1.
Etymology
From Latin sinus ("curve, fold, bosom"), which was actually a mistranslation — Arabic mathematicians used a word meaning "sine" that looked, unvowelled, like their word for "bosom," and Latin translators picked the wrong meaning.
Synonyms
View more →Related words
Rhymes for sine
See all rhymes for sine →Frequently asked questions
What does “sine” mean?
The word “sine” means in trigonometry, a function of an angle giving the ratio of the length of the opposite side to the hypotenuse in a right triangle. In plain terms, a trigonometric function used to relate angles to the sides of a right triangle.
How do you pronounce “sine”?
“Sine” is pronounced syn (/saɪn/ in IPA).
How do you use “sine” in a sentence?
Here is “sine” used in a sentence: “The sine of 90 degrees is 1.”
What part of speech is “sine”?
“Sine” is a noun.
Where does the word “sine” come from?
The word “sine” comes from Latin.
Is “sine” a common word?
“Sine” is an uncommon word in modern English.
