the parallelogram determined by vectors a and b has area 23–√. if the vector c=a b makes an angle of π3 with 2b, and |c|=6, then what is |b|?

4x and 6y

im not sure though

f is the midpoint of

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!