ACOS
The ACOS function returns the arccosine, or inverse cosine, of a number. It is used to find the angle whose cosine is the specified number. This function is particularly useful in trigonometry and geometry.
Syntax 🔗
=ACOS(number)
Number | The cosine of the angle for which you want to find the arccosine. |
Number | The cosine of the angle for which you want to find the arccosine. |
About ACOS 🔗
Use the ACOS function in Excel to find the angle whose cosine is a given number. This function helps you determine the arccosine, or inverse cosine, of a specified value, making it useful for calculations involving angles in trigonometry and geometry.
Examples 🔗
To find the angle whose cosine is 0.5, use the ACOS function: =ACOS(0.5). This returns the angle in radians.
Notes 🔗
Ensure the number you provide to the ACOS function is between -1 and 1. If the number is outside this range, the function returns a #NUM! error.
Questions 🔗
The ACOS function returns the arccosine of the given number, which represents the angle in radians whose cosine equals the specified number.
What is the allowable range for the input number in the ACOS function?The input number for the ACOS function must fall within the range of -1 to 1. If the input number is outside this range, the function will result in a #NUM! error.