1. The problem statement, all variables and given/known data Find parametric equations for the tangent line at the point (cos (-5*pi/6), sin (-5*pi/6), -5*pi/6) on the curve x(t) = cos t y(t) = sin t z(t) = t (Your line should be parametrized so that it passes through the given point at t=0). Im not really understanding the question that well, can anyone help me understand and solve this problem? 2. Relevant equations 3. The attempt at a solution What I have so far is, r'(t) = ( - sin t , cos t, 1) so x(t) = -sin t + cos(-5pi/6) thats all I have so far and its wrong.