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In this comprehensive guide, we will explore everything you need to know about the RADIANS function in Excel. The RADIANS function is a useful tool for converting degrees to radians, which is a common requirement in various mathematical and trigonometric calculations. By the end of this article, you will have a deep understanding of the RADIANS function, its syntax, examples, tips and tricks, common mistakes, and related formulae.

The RADIANS function in Excel has a simple syntax, which makes it easy to use even for beginners. The syntax for the RADIANS function is as follows:

Where angle is the angle in degrees that you want to convert to radians. The function will return the equivalent angle in radians.

Let’s dive into some examples to better understand how the RADIANS function works in Excel.

Example 1: Converting 180 degrees to radians

To convert 180 degrees to radians, you can use the following formula:

This formula will return the value 3.14159265358979, which is the equivalent of 180 degrees in radians ( radians).

Example 2: Converting 90 degrees to radians

If you want to convert 90 degrees to radians, you can use the following formula:

This formula will return the value 1.5707963267949, which is the equivalent of 90 degrees in radians (/2 radians).

Example 3: Converting 360 degrees to radians

To convert 360 degrees to radians, you can use the following formula:

This formula will return the value 6.28318530717959, which is the equivalent of 360 degrees in radians (2 radians).

Here are some tips and tricks to help you make the most of the RADIANS function in Excel:

1. Remember that the RADIANS function only accepts angles in degrees as input. If you have an angle in another unit, such as minutes or seconds, you will need to convert it to degrees first before using the RADIANS function.
2. If you need to convert radians back to degrees, you can use the DEGREES function in Excel. The syntax for the DEGREES function is =DEGREES(radians).
3. When working with trigonometric functions in Excel, such as SIN, COS, and TAN, remember that these functions expect angles in radians. Therefore, it is essential to use the RADIANS function to convert degrees to radians before using these trigonometric functions.

## Common Mistakes When Using RADIANS

Here are some common mistakes that users make when using the RADIANS function in Excel:

1. Forgetting to convert degrees to radians before using trigonometric functions: As mentioned earlier, trigonometric functions in Excel expect angles in radians. If you input an angle in degrees directly into a trigonometric function, you will get incorrect results.
2. Using the wrong unit for the angle: The RADIANS function only accepts angles in degrees. If you input an angle in another unit, such as minutes or seconds, the function will return incorrect results.

## Why Isn’t My RADIANS Function Working?

If your RADIANS function is not working as expected, consider the following troubleshooting steps:

1. Check the input angle: Ensure that the angle you are inputting into the RADIANS function is in degrees. If it is in another unit, convert it to degrees first.
2. Verify the formula syntax: Make sure that your formula follows the correct syntax for the RADIANS function, which is =RADIANS(angle).
3. Inspect for typos or errors: Double-check your formula for any typos or errors that might be causing the function to return incorrect results.

Here are some related formulae that you might find useful when working with the RADIANS function in Excel:

1. DEGREES: The DEGREES function converts radians to degrees. The syntax for the DEGREES function is =DEGREES(radians).
2. SIN: The SIN function returns the sine of an angle. The syntax for the SIN function is =SIN(angle), where the angle is in radians.
3. COS: The COS function returns the cosine of an angle. The syntax for the COS function is =COS(angle), where the angle is in radians.
4. TAN: The TAN function returns the tangent of an angle. The syntax for the TAN function is =TAN(angle), where the angle is in radians.
5. ASIN, ACOS, ATAN: These functions return the inverse trigonometric functions (arcsine, arccosine, and arctangent) of a given number. The syntax for these functions is =ASIN(number), =ACOS(number), and =ATAN(number), respectively. The result will be in radians.

By now, you should have a thorough understanding of the RADIANS function in Excel, its syntax, examples, tips and tricks, common mistakes, and related formulae. With this knowledge, you can confidently use the RADIANS function in your Excel worksheets to convert angles from degrees to radians and perform various mathematical and trigonometric calculations.

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