MATLAB: Any ideas to find intersection between tan(t) and y1, y2, and y3 line equations

itersection withline equationstan(t)

Hello! I want to find intersection between tan(t) and the following line equations but my code instead of giving me two intersection points, just giving me one at origin(0,0)
t=0:0.01:5; 
y1=0.5*t; y2=t; y3=2*t;
i1=intersect(tan(t),y1)
i2=intersect(tan(t),y2)
i3=intersect(tan(t),y2)
HINT: There should be 2 intersection points for each one of i1, i2, and i3!

Best Answer

    ieq1=@(t) tan(t)-0.5*t; 
    ieq2=@(t) tan(t)-t; 
    ieq3=@(t) tan(t)-2*t;
    i1=fzero(ieq1,[pi 3*pi/2]);
    i2=fzero(ieq2,[pi 3*pi/2]);
    i31=fzero(ieq3,pi/4);
    i32=fzero(ieq3,[pi 3*pi/2]);
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