Problem

Identify all possible quadrants of an angle $\theta$ that satisfies the given conditions.
\[
\cos \theta=0, \tan \theta< 0
\]
Select all possible quadrants below.
A. Quadrant II
B. Quadrant IV
C. Quadrant I
D. Quadrant III

Answer

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Answer

\(\boxed{\text{Quadrant II}}\)

Steps

Step 1 :The cosine of an angle is zero when the angle is \(\frac{\pi}{2}\) or \(\frac{3\pi}{2}\) (90 or 270 degrees). This means that the angle is either in Quadrant II or Quadrant III.

Step 2 :However, the tangent of an angle is negative when the angle is in Quadrant II or Quadrant IV.

Step 3 :Therefore, the only quadrant that satisfies both conditions is Quadrant II.

Step 4 :\(\boxed{\text{Quadrant II}}\)

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