14 Show that the vector 
ˆ
ˆ
ˆ
i
j
k
+
+
 is equally inclined to the axes OX, OY and OZ 15 Find the position vector of a point R which divides the line joining two points  P
and Q whose position vectors are 
ˆ
ˆ
ˆ
ˆ
ˆ
ˆ
2
  and –
i
j
k
i
j
k
+
−
+
+
 respectively, in the
ratio 2 : 1
(i) internally
(ii) externally
© NCERT
not to be republished
VECTOR ALGEBRA
441
16