Meaning of the word sine in English

What does sine mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

sine

US /saɪn/
UK /saɪn/
"sine" picture

Noun

in a right-angled triangle, the ratio of the length of the side opposite the angle to the length of the hypotenuse

Example:
The sine of 30 degrees is 0.5.
We need to calculate the sine of angle A to find the height.