C language sin() function: sine function

Function name : sin

Header file : <math.h>

Function prototype : double sin(double x);

Function : sine function

Parameters : double x The radian of the operation

Return value : Returns the sine value of radians

Formula: 1°=π/180°radians

Program example : Find the sine of an angle of 30 degrees and output the result

 #include<stdio.h>#include<math.h>#definePI3.14159265intmain(void){doubleresult,x=30*PI/180;//Convert a 30-degree angle into radians result=sin(x);printf( Thesin()of%lfis%lfn,x,result);return0;}

Running results:

 Thesin()of0.523599is0.500000