This is machine translation

Translated by Microsoft
Mouseover text to see original. Click the button below to return to the English version of the page.

Note: This page has been translated by MathWorks. Click here to see
To view all translated materials including this page, select Country from the country navigator on the bottom of this page.


Inverse cotangent in radians


Y = acot(X)



Y = acot(X) returns the Inverse Cotangent (cot-1) of the elements of X. The acot function operates element-wise on arrays. For real elements of X, acot(X) returns values in the interval [-pi/2,pi/2]. For complex values of X, acot(X) returns complex values. All angles are in radians.


collapse all

ans = 0.3672

Find the inverse cotangent of the elements of vector x. The acot function acts on x element-wise.

x = [0.5i 1+3i -2.2+i];
Y = acot(x)
Y = 1×3 complex

   1.5708 - 0.5493i   0.1093 - 0.3059i  -0.3689 - 0.1506i

Plot the inverse cotangent function over the intervals and .

x1 = -2*pi:pi/30:-0.1;
x2 = 0.1:pi/30:2*pi;
hold on
grid on

Input Arguments

collapse all

Numeric input, specified as a number, vector, matrix, or multidimensional array.

Data Types: single | double
Complex Number Support: Yes

More About

collapse all

Inverse Cotangent

The inverse cotangent is defined as


Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

See Also

| |

Introduced before R2006a