What is IMCOS function in Excel?
The IMCOS function is one of the Engineering functions of Excel.
It Returns the cosine of a complex number.
We can find this function in Engineering category of the insert function Tab.
How to use IMCOS function in excel
- Click on an empty cell (like F5).

2. Click on the fx icon (or press shift+F3).

3. In the insert function tab you will see all functions.

4. Select ENGINEERING category.
5. Select IMCOS function
6. Then select ok.

7. In the function arguments Tab you will see IMCOS function.
8. Inumber section is a complex number for which you want the cosine.
9. You will see the results in the formula result section.

Examples of IMCOS function in Excel

IMCOS related functions
- Use IMCOSH function to return the hyperbolic cosine of a complex number.
- Use IMSIN function to return the sine of a complex number.
- Use IMCOT function to return the cotangent of a complex number.
- Use IMTAN function to return the tangent of a complex number.