in a right-angled triangle, the measurement of an acute angle that is equal to the length of the side opposite the angle divided by the length of the hypotenuse
Synonyms and related words
Describing and measuring angles
at right angles to/at a right angle to
cos
cosine
sine
noun countable maths
US /saɪn/
Other entries for this word
sine dieadverb
sine qua nonnoun
Word Forms
singular
sine
plural
sines
DEFINITIONS1
1
in a right triangle, the measurement of an acute angle that is equal to the length of the side that is opposite the angle divided by the length of the hypotenuse