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 ilJ Find the scalar and vector projections of b onto a. a = (1,4, 8}, b = (14, 1, 2) scalar projection of b onto a 6 vector projection of b onto a m A tow truck drags a stalled car along a road. The chain makes an angle of 30 with the road and the tension in the chain is 1000 N. How much work is done by the truck in pulling the car 1 km? 750000\F3 J