[" 4f: "a+b+c=0,|a|=3,|b|=4,|vec c|=5" तो "vec b*vec b+b*vec c+c*a=],[[" (A) "47," (B) "25," (C) "-25," (D) "0]]

If vec a,vec b,vec c are three vectors such that vec a+vec b+vec c=vec 0 and |vec a|=3,|b|=4,|vec c|=5 Find the value of vec a*vec b+vec b*vec c+vec c*vec a

If |vec a|=3,|vec b|=5,|vec c|=7 and vec a+vec b+vec c=0 then angle between vec a and vec b is

For three vectors vec(a),vec(b) and vec( c ),vec(a)+vec(b)+vec( c )=vec(0)|vec(a)|=3,|vec(b)|=4,|vec( c )|=5 , then evaluate 2(vec(a)*vec(b)+vec(b)*vec( c )+vec( c )*vec(a)) .

Let vec a , vec b , and vec c are vectors such that | vec a|=3,| vec b|=4 and | vec c|=5, and ( vec a+ vec b) is perpendicular to vec c ,( vec b+ vec c) is perpendicular to vec a and ( vec c+ vec a) is perpendicular to vec bdot Then find the value of | vec a+ vec b+ vec c| .

Let vec a , vec b , and vec c are vectors such that | vec a|=3,| vec b|=4 and | vec c|=5, and ( vec a+ vec b) is perpendicular to vec c ,( vec b+ vec c) is perpendicular to vec a and ( vec c+ vec a) is perpendicular to vec bdot Then find the value of | vec a+ vec b+ vec c| .

The vectors vec(a),vec(b),vec (c ) are such that vec(a) + vec(b) + vec ( c ) = vec(0) . If |vec(a)| = 3 , |vec(b)|= 4 and |vec(c )|= 5 , show that vec(a).vec(b) +vec(b) .vec(c ) + vec (c ) . vec(a) = - 25

If | vec a | = 4, | vec b | = 4 and | vec c | = 5 such that vec a perp (vec b + vec c) vec b perp (vec c + vec a) and vec c perp (vec a + vec b) then | vec a + vec b + vec c | is

If | vec a | = | vec b | = 1, | vec c | = 3vec b * vec c = - (3) / (4) and vec a xxvec c = 2 (vec a xxvec b)

If |vec a| = 3, |vec b| = 5, and |vec c| = 4 and vec a + vec b + vec c = vec O then the value of (vec a . vec b + vec b . vec c + vec c .vec a ) =