ACOS function - Zoho Sheet - Help Guide

ACOS

Returns the inverse cosine ( a rccosine) of a number. The output is a value in radians between 0 and pi.


Syntax

ACOS(number)

number: The (cosine) value whose inverse cosine you want to calculate. It must be between -1 and 1, inclusive. Eg., -0.9


Remarks

  • To return the angle in degrees, use the DEGREES function or multiply it by 180/PI().


Examples

Formula

Result

=ACOS(0.3)

1.266103673

=ACOS(-0.9)

2.690565842

=ACOS(1/2)

1.047197551


Get a hands-on experience of the function in the embedded range below.



Possible errors

Errors

Meaning

#N/A!

  • The function could not find the value it was asked to look for. Commonly occurs in VLOOKUP and similar functions.

#NAME!

  • The function name is incorrect or invalid.

  • The given defined name (if any) is invalid.

  • There is a typo in the defined name used in the function.

  • Double quotes are missing for text values in the function.

  • Colon missing in a cell range reference.

#VALUE!

  • The given argument's data type is incorrect or invalid.
    For example, the function =DATE(A1:A3) will return a #VALUE error when a text value is present in the range.

#REF!

  • The given cell reference is incorrect or invalid. This error may occur when a cell/range has been deleted, moved, or pasted over.

#NUM!

  • The given input number is not between -1 and 1.