Test in Plane for Theta at 20 degrees and Phi at 1 degree
Test for and
All previous quantities where calculated forand do not depend on the angle . The quantities that do change
Using the pythagorean theorem
The two possible answers denote shifting to the left on right on the y axis. We take the direction of positive and negative to be the same as the sign convention for the angle phi starting on the x axis and shifting positive clockwise. A shift of 1 degree in phi at theta equal to 20 degrees only results in a small change in the x and y. This changes depending on the angles.