Returns the cosecant of an angle.
Cú pháp
CSC(number)Đối số
numberbắt buộc
The angle in radians for which you want the cosecant.
The CSC function calculates the cosecant of an angle specified in radians. It is the reciprocal of the sine function, defined as 1/SIN(number).
=CSC(PI()/2)→1Calculates the cosecant of PI/2 radians (90 degrees), which is 1.
=CSC(RADIANS(30))→2Calculates the cosecant of 30 degrees by converting it to radians first.
Prepare the angle
Ensure your angle is in radians. If it is in degrees, use the RADIANS function to convert it.
Enter the formula
Type =CSC(number) into a cell, replacing 'number' with your value or cell reference.
The function will return a #NUM! error because the cosecant is undefined when the sine is zero.