__Which one of the following statements is true?__

1.	__Which one of the following statements is true?__
A.	The tangent of the angle of friction is equal to coefficient of friction
B.	The angle of repose is equal to angle of friction
C.	The tangent of the angle of repose is equal to coefficient of friction
D.	All the above
Answer» E.

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__Which one of the following statements is true?__

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Which one of the following statements is true?