Hi again, My first question has to do with vectors again. But it's not hard. I just can't see my mistake. The problem involves two displacement vectors. A which is 3.00km due south, and B which points due east. No value is given for B. However the resultant vector is 4.49km. So of course I'm asked to find B and it's direction. So using Pythagorean's theorem of. R^2 = A^2 + B^2, I found B to be 3.34km. Which is correct. However here comes my problem. I know the direction of the resultant is east of south, but when trying to find theta I keep getting a wrong answer. I just don't understand what I did wrong. My answer for theta was 41.9 degrees but when I submit my answer, it is wrong. Where is my mistake? Secondly, I have a free fall question.. Here is the problem: A diver springs upward with an initial speed of 1.8 m/s from a 5.0m board. What is the higest point he reaches above the water? So, I would know how to solve for this if the diver jumped off of the ground. Unfortunately the diver is already 5.0m above the water so my problem is I don't know how to solve this. LOL I tried using the equation Y = V^2 - Vo^2 / 2a but my answer couldn't possibly be correct as it wouldn't make sense. A little help and direction for both problems would be greatly appreciated.