Write the vector of magnitude 15 units in the direction of vector 
|
| = (12 + ( - 2)2 + 22)1/2
⇒|
| = (1 + 4 + 4)1/2 = (9)1/2 = 3
a unit vector in the direction of the sum of the vectors is given by:
a vector in the direction of 
which has magnitude 15 units.
= 15
Ans: 
1