b = tand(70);
t = (2*3068)/(2*0.01256*0.00351);
d = sqrt(13)*t-(2/3)*t*b;
syms p q;
p = -20000000:20000000:120000000;
a = ((3*q-4*d*b+sqrt(9*(q^2)-24*d*b*q-24*(b^2)*p*q-16*(b^2)*(q^2)))/(4*(b^2)));
r = (sqrt((2/(3*q))*(p-a)));
solve('sprt(((p-a)^2)+(r^2)*(q^2))+r*(d+a*b) = 0','q'
叮当猫咪