The vectors a,b and a+b are

The vectors a and b are not perpendicular and c and d are two vectors satisfying b xx c=b xx d and a.d=0. The vectors d is equal to

The vectors 3a5b and 2a+b are mutually perpendicular and the vectors a+4b&-a+b are also mutually perpendicular.Then the acute angle between a and b is

Find a unit vector perpendicular to each of the vectors a+b and a-b, where a=3i+2j+2k and b=i+2k-2k

Let a=3hat(i) +2hat(j) +2hat(k) " and " b=hat(i) +2hat(j) -2hat(k) be two vectors. If a vectors perpendicular to both the vectors a+b and a-b has the megnitude 12 ,then one such vectors is

Let a=3hat(i) +2hat(j) +2hat(k) " and " b=hat(i) +2hat(j) -2hat(k) be two vectors. If a vectors perpendicular to both the vectors a+b and a-b has the megnitude 12 ,then one such vectors is

If a=hati+2hatj-3hatk and b=3hati+2hatk then the angle between the vectors a+b and a-b is