Bold theta in latex

I had issues trying to get theta to be a bold symbol in latex, niether \bf or \mathbf seemed to work. Searching the internet gave no real solutions but after asking a cooluge he proposed i use: [code lang=”latex”] \include{amsmath} \newcommand{\boldtheta}{\boldsymbol \theta} \vec{\theta}=\boldtheta [/code] From=To