Is “Sine” a Scrabble word?
Yes
SINE
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Sine
/saɪn/
noun
1.In a right triangle, the ratio of the length of the side opposite an angle to the length of the hypotenuse.
Synonyms: sin