Meaning & use
cosec
The cosecant, a trigonometric function equal to the reciprocal of the sine of an angle.
See it in a sentence
The student used cosec instead of sine to simplify the trigonometric equation.
The textbook lists cosec, sec, and cot as the reciprocal trigonometric ratios.
A note on using this word
Cosec is the standard abbreviation for cosecant, defined as 1 divided by sine, and is used mainly in mathematics.
Words with a similar meaning
cosecant
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