The figure shows three vectors. Vector vec$(A)$ has a length of $39\mathrm{.}0,$ vector vec$(B)$ has a length of $64\mathrm{.}0,$ and vector vec$(C)$ has a length of $23\mathrm{.}0.$

Solve the given equations.

vec$(A)*vec(B)=$

Incorrect

vec$(B)*(vec(A)+$vec$(C))=$

Incorrect

At what angles above and below the horizontal line could vector vec$(A)$ be at so that vec$(A)*vec(B)=0?$

$110$ above or $70$ below

$90$ above or $90$ below

$90$ above or $70$ below

$20$ above or $160$ below

Incorrect