Question

Find a vector perpendicular to each of the vectors a = 2i + j + 3k vector b = 3i + 5j + 2k which has magnitude 10 units.

Answer 1

= î[- 2 – 15] – ĵ[-4 – 9] + k̂[10 – 3] 

= î[-17] – ĵ [-13] + k̂[7] 

= -17î + 13 ĵ + 7k̂