Suppose each edge of the cube shown in the figure is 3 inches long. Find the sine and cosine of the angle formed by diagonals GB and 0 GD . 
Definitions:
Military Forces
Organized armed forces of a country tasked with defense and national security operations.
Mirror-Image Perceptions
A concept in conflict resolution and social psychology, where opposing sides each view themselves positively and the other negatively, often exaggerating the differences.
Own-Age Bias
A tendency to more accurately recognize faces that belong to one's own age group than those of other ages.
Other-Race Effect
The tendency to more easily recognize faces of the race that one is most familiar with (often one's own race).
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