题目
tan (7pi)/(6) = ___A. (sqrt(3))/(3)B. -(sqrt(3))/(3)C. sqrt(3)D. -sqrt(3)
$\tan \frac{7\pi}{6} = \_\_\_$
A. $\frac{\sqrt{3}}{3}$
B. $-\frac{\sqrt{3}}{3}$
C. $\sqrt{3}$
D. $-\sqrt{3}$
题目解答
答案
A. $\frac{\sqrt{3}}{3}$
A. $\frac{\sqrt{3}}{3}$
B. $-\frac{\sqrt{3}}{3}$
C. $\sqrt{3}$
D. $-\sqrt{3}$