The CSC function returns the cosecant of an angle specified in radians. In trigonometry, the cosecant is the reciprocal of the sine function, and it represents the ratio of the hypotenuse to the opposite side of a right-angled triangle.



number The angle in radians for which you want to calculate the cosecant.

About CSC

When you need to find the reciprocal of the sine of an angle in a right-angled triangle, the CSC function in Excel simplifies this computation for you. It works seamlessly to provide the cosecant value of the specified angle measured in radians. This trigonometric function proves especially useful in various mathematical and engineering applications where angles play a significant role in calculations or analyses. Whether it's determining mechanical forces or analyzing wave behaviors, the CSC function helps derive accurate values for further mathematical operations based on trigonometric principles.


If you want to find the cosecant of an angle of 0.7854 radians, you can use the following formula: =CSC(0.7854). This will return the cosecant of the given angle.

Suppose you are working on a physics problem that requires you to calculate the reciprocal of the sine of an angle measured in radians. You can use the CSC function to swiftly obtain the required cosecant value, facilitating your analysis and decision-making process.


What is the relationship between the CSC function and the sine function?

The CSC function calculates the reciprocal of the sine function. It represents the ratio of the length of the hypotenuse to the length of the opposite side in a right-angled triangle, taking the angle in radians as the input.

Can I use the CSC function for angles in degrees?

No, the CSC function expects the input angle to be in radians. If the angle is in degrees, you will need to convert it to radians before using the CSC function. You can use the RADIANS function to convert angles from degrees to radians in Excel.

In what types of mathematical or engineering applications is the CSC function commonly used?

The CSC function is often utilized in fields such as physics, engineering, and mathematics whenever there is a need to calculate the reciprocal of the sine function. This can be particularly relevant in scenarios involving wave analysis, mechanical forces, or any situation where trigonometric principles are applied.

Related functions