Y = acos(X)
Y = acosh(X)
acoshoperate element-wise on matrices. Their domains and ranges include complex values. All angles are in radians.
acos(X) returns the inverse cosine for each element of
X. For real elements of
X in the range [-1,1],
acos(X) is real and in the range [0,
pi]. For real elements of
X outside the range [-1,1],
acos(X) has nonzero imaginary parts.
acosh(X) returns the inverse hyperbolic cosine for each element of
-1 <= x <= 1.
x = -1:.05:1;
(c) Copyright 1994 by The MathWorks, Inc.