Question

5
47. If A+B is a unit vector along x-axis and
A-1-j+k. then what is B ?​

Answer 1

Answer:

B = 2i + j - k

Explanation:

If A+B is a unit vector along x-axis and

A   -i-j+k. then what is B

B = (A + B) - A

A+B is a unit vector along x-axis

=> A + B =   i  

A = -i-j+k

=> B = i - ( -i-j+k)

=> B = 2i + j - k