\[ y'(x) \left (x^2 \cos (y(x))+2 y(x) \sin (x)\right )+2 x \sin (y(x))+y(x)^2 \cos (x)=0 \] ✓ Mathematica : cpu = 0.275337 (sec), leaf count = 21
\[\text {Solve}\left [x^2 \sin (y(x))+y(x)^2 \sin (x)=c_1,y(x)\right ]\] ✓ Maple : cpu = 0.112 (sec), leaf count = 19
\[\{x^{2} \sin \left (y \left (x \right )\right )+\sin \left (x \right ) y \left (x \right )^{2}+c_{1} = 0\}\]