std::sin
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   Defined in header <cmath>
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|   float       sin( float arg );  | 
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|   double      sin( double arg );  | 
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|   long double sin( long double arg );  | 
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|   double      sin( Integral arg );  | 
(since C++11) | |
Computes sine of arg
[edit] Parameters
| arg | - | floating point value representing angle in radians | 
[edit] Return value
sine of arg in the range [-1 ; +1].
Domain error occurs if arg is infinite. NAN is returned in that case.
[edit] See also
|   computes cosine (cos(x))  (function)  | |
|    computes tangent (tan(x))  (function)  | |
|    computes arc sine (arcsin(x))  (function)  | |
|    computes sine of a complex number (sin(z))   (function template)  | |
|    applies the function std::sin to each element of valarray   (function template)  | |