A) \[\tan \,\,{{12}^{o}}\]
B) \[\cos \,\,{{12}^{o}}\]
C) \[sin\,\,{{12}^{o}}\]
D) None of these
Correct Answer: A
Solution :
Coefficient of static friction \[{{\mu }_{s}}=\tan \,\,{{\theta }_{s}}\] \[{{\mu }_{s}}=\tan \,\,12\]
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