A concrete highway curve of radius 80.0 m is banked at a 19.0^\circ angle. What is the maximum speed with which a 1900 kg rubber-tired car can take this curve without sliding? (Take the static coefficient of friction of rubber on concrete to be 1.0.) I used the equation v = sq rt (rg*tan(theta)) but that didn't work, so I used v(max) = sq. rt. (rg*u(coeff. static friction)) and got 28.8 m/s2, but that didn't work either. If anyone can tell me what I'm missing or went wrong, I'd greatly appreciate it.