If `| A times B |` = A . B , then find the angle between A and B ;

( a ) 0
( b ) `pi/4`
( c ) `pi/2`
( d ) `pi`

sin^(-1)(0) is equal to : (a) 0 (b) pi/6 (c) pi/2 (d) pi/3

A pi B -pi C) 0 D pi/2

The magnitudes of vectors vec a , vec b and vec c are respectively 1,1 and 2. If vec ax( vec ax vec c)+ vec b= vec0 , then the acute angle between vec a& vec c is pi/3 (b) pi/6 (c) pi/4 (d) None of these

If |veca.vecb|=sqrt(3)|vecaxxvecb| then the angle between veca and vecb is (A) pi/6 (B) pi/4 (C) pi/3 (D) pi/2

The angle between the planes 2x-y+z=6 and x+y+2z=7 is (A) pi/4 (B) pi/6 (C) pi/3 (D) pi/2

The non zero vectors veca,vecb, and vecc are related byi veca=8vecb nd vecc=-7vecb. Then the angle between veca and vecc is (A) pi (B) 0 (C) pi/4 (D) pi/2

If veca,vecb and vecc are non coplanar and unit vectors such that vecaxx(vecbxxvecc)=(vecb+vecc)/sqrt(2) then the angle between vea and vecb is (A) (3pi)/4 (B) pi/4 (C) pi/2 (D) pi

If vec a,vec b and vec c are non-coplanar unit vectors such that vec a xx(vec b xxvec c)=(vec b+vec c)/(sqrt(2)), then the angle between vec a and vec b is a.3 pi/4b. pi/4 c.pi/2d. pi

Let the vectors vec a and vec b be such that |vec a|=3 and |vec b|=(sqrt(2))/(3), then vec a xxvec b is a unit vector,if the angle between vec a and vec b (A) pi/6( B) pi/4(C)pi/3(D)pi/2