If `veca=xhati+2hatj-zhatk and vecb=3hati-yhatj+hatk` are two equal vectors then write the value of x+y+z.

If vectors hati-3hatj+5hatk and hati-3hatj-ahatk are equal vectors, then the value of a is

If the vectors veca=hati+hatj+hatk,vecb=2hati-hatj+hatk and vecc=khati-2hatj+3hatk are coplaner then find the value of k.

Let veca=2hati-4hatj+5hatk and vecb=hati-2hatj-8hatk be two vectors Find the angle between the vectors veca and vecb .

Let veca=2hati-4hatj+5hatk and vecb=hati-2hatj-8hatk be two vectors Find the projection of veca on vecb .

If veca=hati+hatj-hatk,vecb=2hati+3hatj+hatk and theta is the angle between them, then tantheta =

For given vectors, veca=2 hati-hatj+2 hatk and vecb=-hati+hatj-hatk , find the unit vector in the direction of the vectors veca+vecb

If veca = hati + lambda hatj - 2hatk , vecb=2hati-3hatj-3hatj+5hatk and veca.vecb = - 20 then the value of lambda is equal to

Let veca=2hati+hatj-3hatk and vecb=4hati+hatj+hatk be two vectors. Find a vector vecc perpendicular to veca and vecb .

Consider the vectors veca=hati+2hatj-3hatk and vecb=4hati-hatj-2hatk . Find the projections of veca on vecb and vecb on veca .

Consider the vectors veca=hati-hatj+3hatk and vecb=3hati-7hatj+hatk Find the unit vector in the direction of (veca+vecb)/2