asin - Inverse sine in radians - MATLAB (original) (raw)
Main Content
Syntax
Description
`Y` = asin([X](#mw%5F52cb89d0-23d9-4f6d-a7cd-69183f958101))
returns theInverse Sine (sin-1) of the elements of X
in radians. The function accepts both real and complex inputs.
- For real values of
X
in the interval [-1, 1],asin(X)
returns values in the interval [-π/2, π/2]. - For real values of
X
outside the interval [-1, 1] and for complex values ofX
,asin(X)
returns complex values.
Examples
Find the inverse sine of a value.
Find the inverse sine of the elements of vector x
. The asin
function acts on x
element-wise.
x = [0.5i 1+3i -2.2+i]; y = asin(x)
y = 1×3 complex
0.0000 + 0.4812i 0.3076 + 1.8642i -1.1091 + 1.5480i
Plot the inverse sine function over the intervals -1≤x≤1.
x = -1:.01:1; plot(x,asin(x)) grid on
Input Arguments
Sine of angle, specified as a scalar, vector, matrix, multidimensional array, table, or timetable. The asin
operation is element-wise whenX
is nonscalar.
Data Types: single
| double
| table
| timetable
Complex Number Support: Yes
Extended Capabilities
Theasin
function fully supports tall arrays. For more information, see Tall Arrays.
Usage notes and limitations:
- Generates an error during simulation and returns
NaN
in generated code when the input valueX
is real, but the output should be complex. To get the complex result, make the input value complex by passing incomplex(X)
.
Usage notes and limitations:
- Generates an error during simulation and returns
NaN
in generated code when the input valueX
is real, but the output should be complex. To get the complex result, make the input value complex by passing incomplex(X)
.
The asin
function supports GPU array input with these usage notes and limitations:
- If the output of the function running on the GPU can be complex, then you must explicitly specify its input arguments as complex. For more information, see Work with Complex Numbers on a GPU (Parallel Computing Toolbox).
For more information, see Run MATLAB Functions on a GPU (Parallel Computing Toolbox).
Version History
Introduced in R2006a
The asin
function can calculate on all variables within a table or timetable without indexing to access those variables. All variables must have data types that support the calculation. For more information, see Direct Calculations on Tables and Timetables.