Question

a
ã xb given
ă=2? +3 i 4 to = 3i+5?​

Answer 1

Answer:-

Given vectors are:

a = i + j + k, b = 2i – 7j – 3k, c = i/√3 + j/√3 - k/√3

Now,

|a| = √{(1)2 + (1)2 + (1)2} = √(1 + 1 + 1) = √3

|b| = √{(2)2 + (-7)2 + (-3)2} = √{4 + 49 + 9} = √62

|c| = √{(1/√3)2 + (1/√3)2 + (1/√3)2} = √{1/3 + 1/3 + 1/3} = 1