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IMCOS
See Also
Returns the cosine of a complex number in x + yi or x + yj text format.
If this function is not available, and returns the #NAME? error, install and load the Analysis ToolPak add-in.
How?
- On the Tools menu, click Add-Ins.
- In the Add-Ins available list, select the Analysis ToolPak box, and then click OK.
- If necessary, follow the instructions in the setup program.
Syntax
IMCOS(inumber)
Inumber is a complex number for which you want the cosine.
Remarks
- Use COMPLEX to convert real and imaginary coefficients into a complex number.
- If inumber is a logical value, IMCOS returns the #VALUE! error value.
- The cosine of a complex number is:
Example
The example may be easier to understand if you copy it to a blank worksheet.
How?
- Create a blank workbook or worksheet.
- Select the example in the Help topic. Do not select the row or column headers.
Selecting an example from Help
- Press CTRL+C.
- In the worksheet, select cell A1, and press CTRL+V.
- To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Tools menu, point to Formula Auditing, and then click Formula Auditing Mode.
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| A |
B |
| Formula |
Description (Result) |
| =IMCOS("1+i") |
Cosine of 1+i (0.83373 - 0.988898i) |
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