MATLAB: How to use plot

syms x
th=[0:0.05:1.57];
[x]=solve('cos(th+x)=0','x')
i wanna show graph about x-axis—>th,y-axis—>x
i use function solve.
but it calls just
x =
pi/2 - th
i want vector x that extracted by th.
then i wanna see plot at x-axis—>th,y-axis—>x
how to i solve it?
thank you for reading

Best Answer

Maybe this
syms x 
th=[0:0.05:1.57]; 
[x]=solve('cos(th+x)=0','x');
f=subs(x,'th',th);
plot(th,f,th,cos(th),'r')
legend('f','cos(th)')
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