find the length and direction for each of the vertor if a. x=3, y=4 b. x=23, y=45 c. x=16.2, y=28.7 d. x=382.4, y=768.3
All of these are similar to the first one
Length = √[x^2 + y^2 ] = √ [3^2 + 4^2] = √25 = 5
Direction = arctan [y/x] = arctan [4/3] = 53.13°
+185 
