ACOS Google Sheets Formula
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ACOS Formula Syntax
Example Use Case
Calculating the inverse cosine (arccos) of a number, useful for trigonometry and angle calculations in Google Sheets.
Understanding the ACOS Function in Google Sheets
The ACOS function in Google Sheets returns the arccosine (inverse cosine) of a number. The result is given in radians, ranging from 0 to π. This function is useful in trigonometry, physics, and engineering calculations where angle measurements are required.
For example, when working with circles or wave functions, ACOS helps determine the angle whose cosine is a given value. It is commonly used in geometry, physics simulations, and signal processing.
Why Use ACOS in Google Sheets?
ACOS is essential for converting cosine values back into angles. If you have a cosine ratio and need the corresponding angle in radians, ACOS provides a quick solution. When combined with the DEGREES function, it can convert the angle to degrees.
Example with Sample Data
| Input | Formula | Result (Radians) |
|---|---|---|
| 0.5 | =ACOS(0.5) | 1.0472 |
| -1 | =ACOS(-1) | 3.1416 |
| 1 | =ACOS(1) | 0 |
The table above demonstrates how ACOS converts cosine values to angles in radians. To convert the result to degrees, use =DEGREES(ACOS(value)).
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