Functions
ACOS
Arccosine in radians
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When to use it
When should I use ACOS?
Use ACOS to compute the arccosine of a value between -1 and 1, returning the angle in radians — commonly needed in geometry, physics, and navigation calculations.
Used in
Syntax
ACOS(number)Examples
=ACOS(0) // => 1.5707963267948966
=ACOS(1) // => 0
=ACOS(-1) // => 3.141592653589793