If ` -> a , -> b , -> c`are unit vectors such that ` -> a+ -> b+ -> c= ->0`find the value of ` -> adot -> b+ -> bdot -> c+ -> cdot -> a`.

If vec a ,\ vec b ,\ vec c are unit vectors such that vec a+ vec b+ vec c= vec0 find the value of vec adot vec b+ vec bdot vec c+ vec cdot vec adot'

Three vectors -> a , -> b and -> c satisfy the condition -> a+ -> b+ -> c= ->0 . Evaluate the quantity mu= -> adot -> b+ -> bdot -> c+ -> cdot -> a , if | -> a|=1,| -> b|=4 and | -> c|=2 .

If vec a , vec b ,a n d vec c are unit vectors such that vec a+ vec b+ vec c=0, then find the value of vec adot vec b+ vec bdot vec c+ vec cdot vec adot

If a,b,c are unit vectors such that a+b+c=0 , then find the value of a.b+b.c+c.a .

If a, b, c are unit vectors such that a-b+c=0 then c*a is equal to

If vec a,vec b,vec c are unit vectors such that vec a+vec b+vec c=vec 0 find the value of vec a+vec b+vec bdot c+vec *vec a

If a,b,c are unit vectors such that a + b + c = 0 then a.b + b.c + c + c . A=

If vec a, vec b, vec c are unit vectors such that vec a+ vec b+ vec c =0 , find the value of vec a.vec b+ vec b .vec c + vec c. vec a .

vec a , vec b , vec c are unit vectors such that vec a+ vec b+ vec c=0. then find the value of vec a. vec b+ vec b.vec c+ vec c. vec a