Find the efficiency in the above problem if the friction angle is 6¬�

1.	Find the efficiency in the above problem if the friction angle is 6¬¨¬®‚Äö√†√ª?#
A.	89.23 %
B.	91.02 %
C.	88.58 %
D.	85.69 %
Answer» D. 85.69 %

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Find the efficiency in the above problem if the friction angle is 6¬¨¬®‚Äö√†√ª?#

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