Answer
(a) quadrant I.
(b) quadrant III or IV.
(c) quadrant III.
Work Step by Step
(a) If $cos\theta\gt0$ and $tan\theta\gt0$, the angle should be in quadrant I.
(b) If $sin\theta\lt0$ and $csc\theta\lt0$, the angle should be in quadrant III or IV.
(c) If $cot\theta\gt0$ and $cos\theta\lt0$, the angle should be in quadrant III.
