Find the unit tangent vector T and the curvature kappaκ for the following parameterized curve.
r(t)= <6t, 6 ln (cos t)> for -pie/2 <t< pie/2
Find the unit tangent vector T and the curvature kappaκ for the following parameterized curve.
r(t)= <6t, 6 ln (cos t)> for -pie/2 <t< pie/2