Helix:
x=R*cos(wt)+x0,y=R*sin(wt)+y0;z=h*t;
Sphere:
(x-xc)^2+(y-yc)^2+(z-zc)^2=r^2
substitute the heilx into sphere:
(R*cos(wt)+x0-xc)^2+(R*sin(wt)+y0-yc)^2+(ht-zc)^2=r^2;
How to solve the "t" quickly and easily? or do you have anyother methods to solve the question? Thank you very much
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