In the modern era, the most notable depiction of the eye is the reverse of the Great Seal of the United States, which appears on the United States one-dollar bill.he Eye appears on the following currency: 1  United States one-dollar bill, as part of the Great Seal (see above). 2  The 50 Estonian krooni note, as part of a depiction of the pipe organ of the Kaeina kÃ¤ina. 3  Church the 500 ukrainian hryvnia.  note
Also, be sure to note the month and time of day. To calculate the sun's angle, divide the length of the stick by the length of the shadow. Next, find the inverse tangent of that value - use tan^-1 for the inverse tangent. If using a scientific calculator, be sure that it is set to degrees and not radians. Repeating the above experiment multiple times a day, over a course of time, eventually yields a table of sun angle values.
If = 0 then. To calculate the azimuth of the sun or a star given its declination and hour angle at our location, we modify the formula for a spherical earth. Replace with declination and longitude difference with hour angle, and change the sign (since hour angle is positive westward instead of east).oving clockwise on a 360 degree circle, east has azimuth 90Â°, south 180Â°, and west 270Â°. There are exceptions: some navigation systems use south as the reference vector. Any direction can be the reference vector, as long as it is clearly defined.