Find the value of tan 0 for the angle shown.

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.

If using the method of completing the square to solve the quadratic equation x 2 + 16 x + 24 = 0 x 2 +16x+24=0, which number would have to be added to "complete the square"?