acos
From cppreference.com
| Defined in header
<math.h>
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| float acosf( float arg );
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(since C99) | |
| double acos( double arg );
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| long double acosl( long double arg );
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(since C99) | |
Computes arc cosine of arg
[edit] Parameters
| arg | - | floating point value |
[edit] Return value
Arc cosine of arg in radians in the range of [0; π] radians.
Domain error occurs if arg is outside the range [-1.0; 1.0]. NAN is returned in that case.
[edit] See also
| computes arc sine (arcsin(x)) (function) |
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| computes arc tangent (arctan(x)) (function) |
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| arc tangent, using signs to determine quadrants (function) |
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| computes cosine (cos(x)) (function) |
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