Question 8

Find the angle between the following pairs of lines: (i) ˆ ˆˆ ˆ ˆ ˆ2 5 (3 2 6 )= − + + λ + +/arrowrightnospr i j k i j k and ˆ ˆˆ ˆ ˆ7 6 ( 2 2 )= − + µ + +/arrowrightnospr i k i j k MATHEMATICS390 (ii) ˆ ˆˆ ˆ ˆ ˆ3 2 ( 2 )= + − + λ − −/arrowrightnospr i j k i j k and ˆ ˆˆ ˆ ˆ ˆ2 56 (3 5 4 )= − − + µ − −/arrowrightnospr i j k i j k