ACOS

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“ACOS”

Used for – “ACOS” is used find the value of arccosine in radians of the angle which is written in numbers in MS excel and display the end result achieved.

Syntax – ACOS(Number).

Example – Let us continue with the example of COS, we have a value in cell B2 0.866025 which comes as result of formula COS & value in cell C2 0.154251 which comes as result of formula COS and wants excel tells the value of arccosine of these numbers then you can write up the formula as =ACOS(B2) in cell B3 & =ACOS(C2) in cell C3 and Excel came with answer 0.523599 & 30 respectively which is the value equal to arccosine of number 0.866025 & 0.154251. See example below:-

A
B
C
D
E
F
G
H
I
1
30
=RADIANS(A1)
=DEGREES(B1)






2

=COS(B1)
=COS(C1)






3

=ACOS(B2)
=ACOS(C2)






4









5









6









7










And result you get as under:-

A
B
C
D
E
F
G
H
I
1
30
0.523599
30






2

0.866025
0.154251






3

0.523599
30






4









5









6









7










You can check it yourself by copy the highlighted table and pasting in the first cell of the spread sheet.
NOTE:- Here you must note that this formula gives answer only in radians as per default. So please always converts the answer using DEGREE formula.

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