Pls doo all of them and make sure it's correct

Given vectors (1' = (1,4, 3),E = (5. 2,3) and E = (2, 1,1), determine: a) the angle, 9, between (i and E b) a unit vector that is perpendicular to I; and 5 Determine the value ofk if)? = (k 3. 10) and 37' = (8. 5) are: a) collinear b) perpendicular State the vector and Cartesian equations of the line passing through A(3. 4) and B (7, 5)