1. The problem statement, all variables and given/known data Convert from rectangular to spherical coordinates. (-(sqrt3)/2 , 3/2 , 1) 2. Relevant equations We know the given equations are ρ = sqrt(x^2 + y^2 + z^2) tan theta = y/x cos φ = z / ρ 3. The attempt at a solution My answer was (2, -pi/3, pi/3) It should be a simple plug and go... Am I doing simple math wrong? The only part I think I could get wrong is the y/x but -3 / 2 / sqrt3 / 2 should be sqrt3 right? I'm using webassign if that matters at all. I'm sorry for posting such a simple question but I don't understand how that solution is wrong... I guess I'm just having a huge brain fart?