An insect moves in a circular path of radius R. If it rotates through an angle e, find its displacemsementmeans `vec s = Delta vec r` , where `Delta vec r` is the change in position vector''.

An insect moves in a circular path of radius R. If it rotates through an angle e,find its displacemsementmeans vec s=Deltavec r, where Deltavec r is the change in position vector.

If vec r* vec a =0 = vec r* vec b ,where vec a and vec b are non-coplanar vectors then

If vec r*hat i=vec r*hat j=vec r*hat k and |vec r|=3, then find the vector vec r .

A vector vec(a) is turned without a change in its length through a small angle d theta . Find the value of |Deltavec(a)| and Delta a .

A vector vec(a) is turned without a change in its length through a small angle d theta . Find the value of |Deltavec(a)| and Delta a .

The position vectors of P and Q are respectively a and b. If R is a point on vec(PQ) such that vec(P)R = 5 vec(P)Q , then the position vector of R is

vec a,vec b,vec c are the three coplanar vectors and if vec r*vec a=vec r*vec b=vec r*vec c=0 then prove that vec r is a zero vector

Let ABC be a triangle whose circumcentre is at P. If the position vectors of A, B, C and P are vec(a) , vec(b) , vec(c ) and (vec(a) + vec(b) + vec(c ))/(4) respectively, then the position vector of the orthocentre of this triangle is

Let ABC be a triangle whose circumcentre is at P. If the position vectors of A, B, C and P are vec(a) , vec(b) , vec(c ) and (vec(a) + vec(b) + vec(c ))/(4) respectively, then the position vector of the orthocentre of this triangle is

If vec a is a unit vector, vec a xxvec r = vec b, vec a * vec r = c, vec a * vec b = 0 then vec r is equal to