3d Plot ( Weird Issue)

*Trying to make a 3-d plot but something is going wrong and i can"t figure it out.*

Plot should come out to the figure below but not getting anything close to it**

clc
clear

w=1;
k=1;

%x is P
x=linspace(1,10,100)';

%y is theta
y=linspace(10,50,100)';

% Displacement Calcualtion
z1=(-w./2.8284*k.*tand(y));
z2=((1./k.*(tand(y)).^2)).*(x+(w./2.8284));
z=z1+z2;

% Creating Meshgrid
xlin = linspace(min(x),max(x),33);
ylin = linspace(min(y),max(y),33);

[X,Y] = meshgrid(xlin,ylin);

% Interpolating missing data or space in between
f = scatteredInterpolant(x,y,z);
Z = f(X,Y);

% Plotting the figure
figure(1)
mesh(X,Y,Z) %interpolated
axis tight; hold on
plot3(x,y,z) %nonuniform

[Rooy]

Fixed it
Tried surface too, does not work
Noticed Z is dominated by Nan but can't figure out why