Let the vectors `veca, vecb, vecc` be such that `|veca| = 2 |vecb| = 4 " and " |vec c| = 4` . If the projection of `vecb` on `veca` is equal to the projection of `vec c` on `veca` and `vec b` is perpendicular to `vec c ` , then the value of `|veca + vecb - vec c | ` is ______ .

Let veca, vecb, vec c such that |veca| = 1 , |vecb| = 1 and |vec c | = 2 and if veca xx (veca xx vec c ) + vec b = 0 then find acute angle between veca and vec c

if veca , vecb ,vecc are three vectors such that veca +vecb + vecc = vec0 then

If veca +vecb +vecc =vec0, |veca| =3 , |vecb|=5 and |vecc| =7 , then the angle between veca and vecb is

Let veca,vecb and vecc are vectors such that |veca|=3,|vecb|=4and |vecc|=5, and (veca+vecb) is perpendicular to vecc,(vecb+vecc) is perpendiculatr to veca and (vecc+veca) is perpendicular to vecb . Then find the value of |veca+vecb+vecc| .

If veca is vector perpendicular to both vecb and vec c then

In a triangle ABC, if |vecB C| = 3, |C vecA| = 5 and |vecB A| = 7, then the projection of the vector B vec A on vecB C is equal to :

veca, vecb ,vec c are three vectors with magnitude |veca| = 4, |vecb| = 4, |vec c| = 2 and such that veca is perpendicular to (vecb + vec c), vecb is perpendicular to (vec c +vec a) and vec c is perpendicualr to (vec a + vec b) . It follows that |veca + vecb+ vec c| is equal to :

If veca , vecb ,vec c are the 3 vectors such that |veca| = 3, |vecb| = 4,|vec c| = 5, |veca + vecb + vec c | = 0 then the value of veca.vecb + vecb.vec c + vec c .vec a is :

If |veca|=3,|vecb|= 5 and |vecc|=4 and veca+ vecb + vecc =vec0 then the value of ( veca. Vecb + vecb.vecc) is equal tio