I'm trying to do this homework problem but I keep getting an answer that is not given. Can someone tell me what I am doing wrong please. This is for University level calc 3. 1. The problem statement, all variables and given/known data 2. Relevant equations A vector U=<x,y> ||U|| means the length of U = √(x^2 +y^2). vectors can also be written as U = ||U||(cosθi, sinθj) 3. The attempt at a solution so I start by naming the vectors.V is the direction the plane is now heading. V1 is the original direction of the plane. V2 is the direction of the wind. V = V1 + V2 V1 = 600(cos148i+sin148j) V2 = 80(cos45i+sin45j) next I distributed, combined like terms and factored out i and j V = (600cos148+80cos45)i + (600sin148+80cos45)j I plugged that into my calculator and got V = <-452.7i + 374.5j> To find the speed I found the length of vector V ||V|| = sqrt[ (-452.7)2+374.52] = 587.5 km/hr That isn't one of the options.. am i wrong?