IMPORTANT
1. An arc AC of a circle subtends a right angle at the centre O. The point B divides the arc in the ratio 1:2 . If and OB =b then find OC
in terms of a and b.
2. Let X,Y and Z be unit vectors such that X+Y+Z = a, Xx(YxZ)=b,
(X x Y) x Z =c.
a.X= 3/2 , a.Y=7/2 and |a|=2. Find X , Y, and Z in terms of a, b and c.