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OpenStudy (anonymous):
If tan (arc cos radical3/k)=radical3/3 then k is?
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OpenStudy (anonymous):
some one help plz
OpenStudy (tkhunny):
The cosine is positive. This is Quadrant I or Quadrant IV The tangent is positive. This narrows it down to Quadrant 1. Rewriting just a bit: \(acos(\sqrt{3}/k) = atan(\sqrt{3}/3)\) Where does that leave us?
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