Find the cross product a x b. a = (6, 5, -4) , b = (2, -1, 1) Verify that it is orthogonal to both a and b. (a x b) . a = (a x b) . b = Find the angle between the vectors. (First find an exact expression and then approximate to the nearest degree.) a = (1, 4, 3}, b =(6,7,1} exact approximate Find the angle between the vectors. (First find an exact expression and then approximate to the nearest degree.) a=4ij+8k, b=12j+6k exact approximate Find two unit vectors that make an angle of 60 with v = 8i + 6j. (Round your answers to four decimal places.) smaller i-component larger i-component Find the acute angle between the lines. Use degrees rounded to one decimal place. 9X - y = 9, x + 4y = 20 OFind the scalar and vector projections of b onto a. a=(1,6), b={3,5) scalar projection of b onto a vector projection of b onto a