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- ACOS (Arc Cosine)
- Calculates the arc cosine, or inverse, of a cosine. The result is the corresponding angle in radians, in the range 0 to PI.
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- Format: ACOS (number)
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- Argument:
- ΓÇó number: A cosine value or a simple operation that yields a cosine. Valid range is from -1.0 to 1.0.
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- Example:
- ACOS (5/7) returns 0.7752.
- Shows that the arc cosine of 5/7 (cosine 0.7143) is 0.7752 radians.