sin() to get sin of a angular value in radian

sin()

We will get sin value of any number by using sin() function.

sin(x)

x = angular value in radian ( not in degree ) We will declare PI as constant as radian input value.

Example sin()

#include <stdio.h>
#include <math.h>
#define PI 3.14159265
int main(void){
     float  x,ret;
     x=90; // input in degree 
     ret=sin(x*PI/180);
     printf("sing(x)=%.1f", ret);
     return 0;
}

The above code will give this output.

sin(x)= 1.0

Example cos()

#include <stdio.h>
#include <math.h>
#define PI 3.14159265
int main(void){
     float  x,ret;
     x=180;
     ret=cos(x*PI/180);
     printf("cos(%.0f)=%.2f",x, ret);
     return 0;
}

Output

cos(180)=-1.00

Example tan()

#include <stdio.h>
#include <math.h>
#define PI 3.14159265
int main(void){
     float  x,ret;
     x=45;
     ret=tan(x*PI/180);
     printf("tan(%.0f)=%.2f",x, ret);
     return 0;
}

Output

tan(45)=1.00

Math functions in C sinh() C- Tutorials

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sin()

Example sin()

Example cos()

Example tan()

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