How to solve transcendental equations using Genetic algorithm

Kindly help me to solve the following transcendental equations using Genetic Algorithm:

cos(x1)+cos(x2)+cos(x3)+cos(x4) = m; cos(3*x1)+cos(3*x2)+cos(3*x3)+cos(3*x4) = 0; cos(5*x1)+cos(5*x2)+cos(5*x3)+cos(5*x4) = 0; cos(7*x1)+cos(7*x2)+cos(7*x3)+cos(7*x4) = 0; cos(9*x1)+cos(9*x2)+cos(9*x3)+cos(9*x4) = 0;

with the following constraints:

0<x1<x2<x3<x4<pi/2;

range of 'm' is: (0.05*pi<m<pi)

[John D'Errico]

What have you tried? If nothing, then why not? Why not make an effort, then show what you tried and ask for help where you got confused?