the non zero vectors a , b and c are related by a = 8b and c = -7bthen the angle between a and c Share with your friends Share 3 Ajanta Trivedi answered this it is given that a = 8b and c = -7b let b=b1i+b2j+b3kthereforea=8b1i+b2j+b3k and c=-7b1i+b2j+b3klet θ is the angle between a and ccosθ=a.cac=-56(b12+b22+b32)8*7b12+b22+b32.b12+b22+b32cosθ=-1thus angle between a and c is π hope this helps you 18 View Full Answer
