Finding angles with optimizaiton

Hello,

I am new to Matlab and would like to find the closest angles to this relationship

How can I do this with the optimization tools in matlab?

Best Regards

Answer 1

[Ameer Hamza]

You need at least two equations to find a unique solution. For a single equation, fix the value of one of these variables

theta = 0.5;
fun = @(phi) sin(theta)^2*cos(phi)^2;
phi = fsolve(fun, rand())