1. The problem statement, all variables and given/known data " A spelunker is surveying a cave. he follows a passage that goes 210 meters straight west, then 180 meters in a direction 45 degrees east of west, then 110 meters at 60 degrees east of south. After a fourth unmeasured displacement he finds himself back where he started. Use the method of components to determine the fourth displacement (magnitude and direction). " 2. Relevant equations 3. The attempt at a solution I have looked around for information on solving this, but am unsure about how to go about finding the other angles to find the magnitude or direction, and am not sure about finding the last dimension. I know I am supposed to show you that i have tried this and believe me I have, but I am new to physics and am pretty much confused on where to even begin this problem. Thanks for all help.