If a picture is presented in the four quadrants of the screen with deg as the Units, what are the positions of the four pictures respectively?
That depends on the size of the screen and the distance to it.
I am just too confused. The point is that I don’t know how to caculate. Each picture’s size is [5.5,5.5]. Can you help me?
2 x tan-1 (28.5/2/60) = 26.72 degrees
2 x sin-1 (28.5/2/60) = 27.48 degrees
The total width of your screen is about 27 degrees at a screen distance of 60cm
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Thanks sincerely! You help me a lot! 