View Compilation Error

0_0_22844216_6681.cpp: In function 'int main()':
0_0_22844216_6681.cpp:117:94: error: expected ',' or ';' before ')' token
         long double r=sqrt(cir.x*cir.x+cir.y*cir.y+k*k*a.x*a.x+k*k*a.y*a.y)-(b.x*b.x+b.y*b.y))/(1-k*k));
                                                                                              ^