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.
1 Rotate the alidade/pointer to the point where the Bagdhad line crosses the arc marking Aries 0 (1) and it will point to an angle(2). 2  In this case, for this date, 55 degrees. 3  So when the sun is at an angle of 55 degrees, it is shining directly over the point on the horizon that marks the direction to Mecca.o find the angle represented by a sine, the process works in reverse: Given a sine of .5 or 30/60, trace the 30 line down to the rim of the grid, place the cord there and read the angle. In the next post I will dig into some of those advanced lines and functions you can see on the face of the sine quadrant.