st-line

Question: If the coordinates of the vertices A, B, C of the triangle ABC be $(-\ 4,\ 2),$ $(12,\ -2)$ and $(8,\ 6)$ respectively, then $\angle \ B =$

1) ${{\tan }^{-1}}\left( -\frac{6}{7} \right)$

2) ${{\tan }^{-1}}\left( \frac{6}{7} \right)$

3) ${{\tan }^{-1}}\left( -\frac{7}{6} \right)$

4) ${{\tan }^{-1}}\left( \frac{7}{6} \right)$

Solution:

Explanation: No Explanation

Rate this question:

★ ★ ★ ★ ★

Average rating: (0 votes)