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Knowledge Base

Calculates the inverse trigonometric cosine function (arccosine). Angle units are in radians. The function is defined for complex values. Phase of a complex number is evaluated between -π and π. If x is complex, or abs(x) > 1, the following equation is used:

 

Supported Product: FDTD, MODE, DEVICE, INTERCONNECT

 

Syntax

Description

out = acos(x);

Returns the complex arccosine of x.

 

Example

Calculate acos(π/4 + i).

x=pi/4+1i;

?acos(x);

result: 

1.03351-0.992724i

 

See Also

Functions, cos

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