Posted by thaokieu on .
The components of vector A are Ax and Ay (both positive), and the angle that it makes with respect to the positive x axis is θ. Find the angle θ if the components of the displacement vector A are (a) Ax = 11 m and Ay = 11 m, (b) Ax = 19 m and Ay = 11 m, and (c) Ax = 11 m and Ay = 19 m.

physics 
Henry,
a. tan(theta) = Ay/Ax =11 / 11 = 1,
theta = 45deg.