27." If "|vec a|=2,|vec b|=5" and "vec a*vec b=8" write value of "|vec a-vec b|

If |vec a|=2|vec b|=5 and |vec a xxvec b|=8, then find the value of vec a.vec b.

If two vectors vec a and vec b are such that |vec a|=2,|vec b|=1 and vec avec b=1, then find rthe value of (3vec a-5vec b)2vec a+7vec b

If | vec a|=2| vec b|=5 and | vec axx vec b|=8, then find the value of vec a . vec bdot

If | vec a|=2| vec b|=5 and | vec axx vec b|=8, then find the value of vec a . vec bdot

If |vec a| = 2, |vec b| = 5 and |vec a xx vec b| = 8 , find the value of vec a. vecb

If |vec a|=8, |vec b|=3 and |vec axx vec b|=12 , then the value of vec a . vec b is

If |vec a| = 2, |vec b| = 5 and |vec a xx vec b| = 8 then vec a . vec b

Let vec a , vec b , vec c are three vectors , such that vec a + vec b + vec c = vec 0 .If , |vec a|=3 , |vec b|=4 and | vec c|=5 , then the value of, |vec a+vec b|^(2) + |vec b-vec c|^(2) + |vec c+vec a|^(2) , equal to :

If | vec a|=2,|vec b|=5 and | vec a xx vec b|=8, find vec a . vec bdot

If |vec a|=5,|vec a-vec b|=8 and |vec a+vec b|=10, then find |vec b|