sine

noun/saɪn/

Frequency rank: #11,803 most common English word

Meaning

a trigonometric function that, for a given angle in a right triangle, is the ratio of the length of the opposite side to the hypotenuse.

Illustration for the English word “sine”

Example sentence

In trigonometry class, we learned that the sine of a 30-degree angle is 0.5.

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