Brain Imaging & Analysis Center

usage: result = acos(x)

The ACOS function returns the arccosine of its argument. The input value must be in the range -1 to 1, and the output will be in the range 0 to 180 (degrees); illegal input values result in an output value of -1. If the input X is a variable with more than one value, ACOS will generate an output variable with the same number of values.

See Also:
ASIN(3), COS(3), SIN(3)

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