Hàm số $y=\sqrt{\frac{1+sinx}{1-cosx}}$ có tập xác định là:

Question

Cơ bản

4 câu trả lời

Answer 1

$\mathbb{R}\setminus \left \{ \frac{\pi }{2}+k2\pi ,k\in \mathbb{Z} \right \}$

Answer 2

$\mathbb{R}\setminus \left \{ k\pi ,k\in \mathbb{Z} \right \}$

Answer 3

C.

$\mathbb{R}$

Answer 4

$\mathbb{R}\setminus \left \{ k\pi ,k\in \mathbb{Z} \right \}$