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Math function
CSC
Returns the cosecant of an angle given in radians.
Rarely usedDifficulty 1250 · ProficientUsage rank #279 of 520
When to use it
Cosecant of an angle in radians: 1/SIN.
The shape of it
- Syntax
=CSC(number)
Worked examples
Peak
=CSC(PI()/2) → 1
Sine is 1 at the peak.
30 degrees
=CSC(RADIANS(30)) → 2
Sine of 30° is 0.5.
One radian
=CSC(1) → 1.188395106
One radian.
Worth knowing
- Convert degrees first.
- Mostly seen in optics and surveying formulas.
- No inverse function; use ASIN(1/x).
Where it goes wrong
- #DIV/0! at 0 and multiples of pi.
- Large inputs (above 2^27) return #NUM!.
Related
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