| MATLAB Function Reference | ![]() |
Y = asin(X)
Y = asin(X) returns the
inverse sine (arcsine) for each element of X. For
real elements of X in the domain
, asin(X) is in the range
. For real elements of x outside
the range
, asin(X) is complex.
The asin function operates element-wise on arrays. The function's domains and ranges include complex values. All angles are in radians.
Graph the inverse sine function over the domain
.
x = -1:.01:1; plot(x,asin(x)), grid on

The inverse sine can be defined as

asin uses FDLIBM, which was developed at SunSoft, a Sun Microsystems™ business, by Kwok C. Ng, and others. For information about FDLIBM, see http://www.netlib.org.
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