Spiral cone in MATLAB (no built in function)

MATLAB CODE:

t=0:0.0001:30*pi;

x=t.*cos(t);

y=t.*sin(t);

plot3(x,y,t)

This is a very simple code.

Check, how to form a spiral circle in Matlab:

https://www.youtube.com/watch?v=i4kR3J1VWSA

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