If either ` vec a= vec0\ or\ vec b= vec0\ t h e n\ vec adot vec b= vec0` but, the converse need not be true. Justify your answer with an example.

If either vec a=vec 0 or vec b=vec 0 ,then vec a*vec b=0 But the converse need not be true. Justify your answer with an example.

If either vec a=0 and vec b=0 then vec a xxvec b=0 Is Is the converse true? Justify your answer with an example.

If vec a + vec b + vec c = 0 then vec a xxvec b =

If | vec axx vec b|=4,\ | vec adot vec b|=2,\ t h e n\ | vec a|^2| vec b|^2= 6 b. 2 c. 20 d. 8

If | vec a|=10 ,\ | vec b|=2\ a n d\ | vec axx vec b|=16 find vec adot vec bdot

If vec a,vec b,rarr are vectors such that vec a*vec b=0 and vec a+vec b=vec c, then

If vec a + vec b + vec c = 0, prove that (vec a xx vec b) = (vec b xx vec c) = (vec c xx vec a)

Show that (vec a + vec b) * (vec a-vec b) = 0hArr | vec a | = | vec b |

Three vectors vec a , vec b , vec c satisfy the condition vec a+ vec b+ vec c= vec0 . Evaluate the quantity mu= vec adot vec b+ vec bdot vec c+ vec cdot vec a , if | vec a|=1, | vec b|=4 a n d | vec c|=2.

If | vec a|=sqrt(26), | vec b|=7 a n d | vec axx vec b|=35 , fin d vec adot vec bdot