how do you know when to use cosine or sine when resolving forces in mechanics?

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with questions dealing with friction when resolving forces vertically confusing which one to choose either cosine or sine?

Posted Tue 26th February, 2013 @ 12:07 by MARCIA

1 Answer

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You have to use SOHCAHTOA

Answered Fri 1st March, 2013 @ 19:05 by Agent006