SAT® Subject Test in Math 1 & 2

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Moderate

Inverse Tangent Function

SATSTM-9JMOS4

Evaluate:

$${\tan}^{-1}\left(-\cfrac{\sqrt{3}}{3}\right)$$

A

$\cfrac{\pi}{3}$

B

$\cfrac{\pi}{6}$

C

$-\cfrac{\pi}{3}$

D

$-\cfrac{\pi}{6}$

E

$\cfrac{5\pi}{6}$