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OpenStudy (anonymous):
Find cos θ if sin θ =- 5/13 and tan θ > 0.
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OpenStudy (anonymous):
Actually, in which of the four quadrants is tangent positive?
OpenStudy (dls):
|dw:1360939368996:dw| cos theta = base/hypotenuse
OpenStudy (dls):
the numerical value i guess u can find from that diagram,for sign conventions,you have all the required info..tan theta>0 i.e +ve u know which quadrant is +ve for tan? which is ALSO -ve for sin?
OpenStudy (anonymous):
@PeterPan in Q1 and Q3?
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