Calculas 3

Exercise 2.3

\f0 Question 6 v B 0/1 pt '0 100 Z 99 6 Details Find the (exact) direction cosines and (rounded to 1 decimal place) direction angles of 5 = (5, 6, 6) Question 4 0/1 pt 9 100 99 0 Details Let v = 1i + 6j and w = 1i + 9j. Find an exact number c so that w - cv is perpendicular to v. C=Question 2 and b = . Find k so that a and b will be orthogonal (form a 90 degree angle). K =\fQuestion 5