trigonometry

Question: $\tan \frac{A}{2}$is equal to

1) $\pm \sqrt{\frac{1-\sin A}{1+\sin A}}$

2) $\pm \sqrt{\frac{1+\sin A}{1-\sin A}}$

3) $\pm \sqrt{\frac{1-\cos A}{1+\cos A}}$

4) $\pm \sqrt{\frac{1+\cos A}{1-\cos A}}$

Solution:

Explanation: No Solution

Rate this question:

★ ★ ★ ★ ★

Average rating: (0 votes)