Let \( \theta \) be an angle in standard poshtion. Name the quadrant in which \( \theta \) lies. \[ \tan \theta<0, \cos \theta<0 \]
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When \( \tan \theta < 0 \), it indicates that the sine and cosine functions have opposite signs. Because \( \cos \theta < 0 \), we can conclude that the cosine function is negative, suggesting that \( \theta \) lies in either the second or third quadrant. However, in the second quadrant, sine is positive and tangent is positive; thus, the only quadrant that aligns with both conditions \( \tan \theta < 0 \) and \( \cos \theta < 0 \) is the second quadrant. So, \( \theta \) lies in the second quadrant.