If the vectors (i +j+k) and 3î form two sides of
a triangle, then 3rd side of the triangle can be :
(1) root 18 unit
(2) root 6 unit
(3) 3/root2 unit
(4) both 1 & 2
*KINDELY PLEASE PROVIDE ME WITH THE METHOD*
Answers
Answered by
27
Answer:
root 18 units
a+b+c=0
a=3i,b=i+j+k,
a+b+c=0
- c= -(4i+ j+ k)
- |c|=√18 units
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