Question 393679
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Hi
tan &#8736;B = opp/adj , that is sides opp and adj to &#8736;B which would be:
tan &#8736;B = 12/5 
diagram for illustration purposes only. 
In this question BC(adj to &#8736;B  ) is the 'short' leg
<img src="http://upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Trigonometry_triangle.svg/200px-Trigonometry_triangle.svg.png ">