solving Coupled nonlinear differential equation?

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theta(s)=Const(c1*cos(theta_initialvalue-alpha)+(yfinal-y(s))*cos(alpha)-(xfinal-x(s)*sin(alpha))
diff(x(s))=cos(theta(s))
diff(y(s))=sin(theta(s))
tan(aplha)=(yfinal-c1*(1-cos(theta_initialvalue))/(xfinal-c1*sin(theta_initialvalue))
% initial conditions
theta(s=0)=0;
x(s=0)=0;
y(s=0)=0;
c1=0.002;
Const=F/EI
EI=3.06*10^3;
F=13.3;,
xfinal.yfinal,theta_initialvalue and alpha=0;
initially x(s),y(s),theta(s)
how to get analytical and numerical solution of these coupled non linear differential equations?

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