`| veca | = 1` , `| vecb| = 2 ` , `veca.vecb = 1` , then find angle between them

veca and vecb are two vectors such that |veca|=1 ,|vecb|=4 and veca. Vecb =2 . If vecc = (2vecaxx vecb) - 3vecb then find angle between vecb and vecc .

If veca +vecb +vecc=0, |veca|=3,|vecb|=5, |vecc|=7 , then find the angle between veca and vecb .

If veca +vecb +vecc=0, |veca|=3,|vecb|=5, |vecc|=7 , then find the angle between veca and vecb .

If veca and vecb asre two vectors such that |veca|=2, |vecb| = 7 and vecaxxvecb=3hati+6hatk find the angle between veca and vecb

If veca and vecb are two such that |veca|=5, |vecb|=4 and |veca.vecb|=10 , find the angel between veca and vecb and hence find |vecaxxvecb|

Let veca and vecb be two non-zero vectors perpendicular to each other and |veca|=|vecb| . If |veca xx vecb|=|veca| , then the angle between the vectors (veca +vecb+(veca xx vecb)) and veca is equal to :

If |veca|=|vecb|=|vecc|and veca+vecb=vecc then find the angle between veca and vecb .

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

Let veca , vecb and vecc be unit vectors such that veca+vecb+vecc=vecx, veca.vecx =1, vecb.vecx = 3/2 ,|vecx|=2 then find theh angle between vecc and vecx .

Let veca , vecb and vecc be unit vectors such that veca+vecb+vecc=vecx, veca.vecx =1, vecb.vecx = 3/2 ,|vecx|=2 then find theh angle between vecc and vecx .