Question 390579
  <pre><font size = 3 color = "indigo"><b>
Hi,         
 sin A >0 and {{{tan A = sin A/Cos A}}} < 0, then cos A must be <0
A is in the II quadrant 
see below summary for (cosx,sinx) as a reference
<img src="http://www.math.ucsd.edu/~jarmel/math4c/Unit_Circle_Angles.png">