Undefined reference to `sin'

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C

Linux

Ubuntu

I have the following code:

#include<stdio.h>
#include<math.h>
int main() {

  double R;      
  double omega;   
  double x, y,t;
  R=6.2;
  omega=0.1;
  t=0;
  x=R*cos(omega*t);
  y=R*sin(omega*t);
  printf("t=%lf\n x=%lf\n y=%lf\n",t, x, y);
}

When compiling it with gcc test.c I get the following error, and I can't work out why:

/usr/bin/ld: /tmp/ccf5Bi7l.o: in function `main':
circle.c:(.text+0x5e): undefined reference to `cos'
/usr/bin/ld: circle.c:(.text+0x7b): undefined reference to `sin'
collect2: error: ld returned 1 exit status

What I have tried:

Can someone help me with this problem?