The tangent is the side opposite of the angle divided by the side adjacent to the angle.
4. tan(D)=7/24 ≈ 0.2917
EF is opposite to D and has length 7. The adjacent side is the side forming the angle that is not the hypotenuse, so it's DE and the length is 24 units.
Do the same thing for the rest of the angles. (You probably already know that acute angles are smaller than 90 degrees, so you have to find the tangent of 2 angles in each problem.) I just used a calculator to divide, but you could do it by hand, and I'm guessing you know how to round. Hope I could help!
So the problem is 64 divide by 6 so your answer is 10 in each container and 4 left over so No, he cannot distribute them into containers equally, because 64 divided by 6 is 10.6666667 or 10.7
If a number is getting subtracted by a negative number the minus sign and the negative sign cancel eachother and become a positive sign that's why there's 2 plus signs because they became positive
