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# std::asin

From cppreference.com
< cpp‎ | numeric‎ | math

Defined in header `<cmath>` |  |
float asin( float arg ); |  |
double asin( double arg ); |  |
long double asin( long double arg ); |  |
double asin( Integral arg ); |  | (since C++11)

Computes arc sine of `arg`.

### [edit] Parameters

arg | - | value of a floating-point or Integral type

### [edit] Return value

Arc sine of `arg` in radians in the range of `[-π/2; π/2]` radians.

Domain error occurs if `arg` is outside the range `[-1.0; 1.0]`. NAN is returned in that case.

### [edit] See also

acos | computes arc cosine (arccos(x)) (function) [edit]
atan | computes arc tangent (arctan(x)) (function) [edit]
atan2 | arc tangent, using signs to determine quadrants (function) [edit]
sin | computes sine (sin(x)) (function) [edit]
asin(std::complex) (C++11) | computes arc sine of a complex number (arcsin(z)) (function template) [edit]
asin(std::valarray) | applies the function std::asin to each element of valarray (function template) [edit]
C documentation for asin

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