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Asked Sep 1, 2019
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Suppose each edge of the cube shown in the figure is 5 inches long. Find the sine and cosine of the angle formed by diagonals DE and DG.
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Suppose each edge of the cube shown in the figure is 5 inches long. Find the sine and cosine of the angle formed by diagonals DE and DG. sine cosine E F D

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Expert Answer

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Consider the right angle triangle DGE. The length of the diagona...

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Since CDHG is a square, DCG is a Right angle triangle DG = /52 +52 /25 25 = 2x 25 = 52 Now from the right angle triangle DGE VDG) (GE) DE 2 52 = 5/2+1 =53

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