If a,b, are two vectors of lengths 2,1 respectively and |a - b| = `sqrt(3)` then (a,b) =

If bara,barb are two vectors of length 2, 1 respectively and abs(bara-barb) = sqrt3, " then " (bara,barb) =

If a,b,c are vector of length 4,4,5 respectively and a,b,c are perpendicular to b+ c , c + a, a+ b respectively, then |a + b + c| =

If a,b are vectors of lengths a,b respectively then ((a)/(a^(2)) - (b)/(b^(2)))^(2) =

If vec a and vec b are any two vectors of magnitudes 2 and 3 respectively and maximum value of |2(vec a timesvec b)|+|3(vec a*vec b)| is sqrt(13) then k=

If a and b are noncollinear unit vectors and |a + b| = sqrt(3) , then (2a + 5b). (3a - b) =

If vec a and vec b are any two vectors of magnitudes 2 and 3, respectively, such that |2( vec axx vec b)|+|3( vec a. vec b)|=k , then the maximum value of k is a. sqrt(13) b. 2sqrt(13) c. 6sqrt(13) d. 10sqrt(13)

If vec a and vec b are any two vectors of magnitudes 2 and 3, respectively, such that |2( vec axx vec b)|+|3( vec a. vec b)|=k , then the maximum value of k is a. sqrt(13) b. 2sqrt(13) c. 6sqrt(13) d. 10sqrt(13)

If vec a,vec b are two unit vectors such that |vec a+vec b|=2sqrt(3) ,then the angle b