What is tantheta\\tan \\thetatantheta in terms of sine and cosine?
costheta/sintheta\\cos\\theta / \\sin\\thetacostheta/sintheta
sintheta/costheta\\sin\\theta / \\cos\\thetasintheta/costheta
sinthetatimescostheta\\sin\\theta \\times \\cos\\thetasinthetatimescostheta
1