rotation of vector

What angle do u want to rotate this vector by and any other conditions given??

For an angle there will be infinite number of vectors which satisfy ur condition (IMAGINE A CONE)! Something else must be given.

ok i m asking real problem abcdef is hexagon & pos. vector of a is i-j+2k then vector bc is

r u trying

rahul to rotate the given vector abt the origin at an angle of xy,yz,or zx plane

Ani can u give the eqn for the cone.

rahul this hint will helps u

r(vec)=mod(r)unit vector along the direction of r

can u solve it yaar

regular yaar

regular yaar

dunno exactly but

take b as a general vector

modb=moda

then a.b=(modb)²cos60

axb=(modb)²sin60

u can get 3 eqations for three variables

am i correct

ya it is correct

ya correct but ong think by making fig. u get it is opp. of vector OA