" If "|vec a|=5*|vec a-vec b|=8" and "|vec a+vec b|=10" then "|vec b|" is equal to "

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

| vec a | = 5, | vec a-vec b | = 8 and | vec a + vec b | = 10 then | vec b | is equal to

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

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

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

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

vec u = vec a-vec b, vec v = vec a + vec b and | vec a | = | vec b | = 2 then | vec u xxvec v | is equal to

If vec a , vec b and vec c are perpendicular to vec b+ vec c, vec c +vec a and vec a + vec b respectively and , if | vec a +vec b | =6 , | vec b + vec c | =8 and |vec c +vec a | =10 , " then " | vec a + vec b + vec c| is equal to :

If |vec(a)|=13, |vec(b)|=5 and vec(a).vec(b)=30 , then |vec(a) xx vec(b)| is equal to

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