Question

Find a vector whose values ​​are towards A and B? A = i + 2j-2k, B = 2i + j + k​

Answer 1

Answer:

___

R _/ 19

Explanation:

A+B = i+2j-2k + 2i+j+k

= 3i + 3j -k

FORMULA:

____________

R = _/ i^2 + j^2 + k^2

put the value in formula

_________________

R = _/ (3)^2 + (3)^2 + (-1)^2

________

R = _/ 9 + 9 + 1

___

R = _/ 19

Answer