skittles1701 skittles1701 11-03-2024 Mathematics contestada Find the unit tangent vector t(t) at the point with the given value of the parameter t.r(t)=√4ti−2t²j+4tk, t=1.a. t(1)= i/2 - 2j - kb. t(1)= i/2 - j + 2kc. t(1)=2i - 2j +k/2d. t(1)=i/2 - j +k/2