Mathematics, 25.03.2021 14:00 destinyleisantos

$sec^{-1}(\frac{-2}{\sqrt{3}})=?$ How do you solve this with the unit circle? I keep getting $\frac{5\pi}{6}$ , but my textbook answer says $\frac{7\pi}{6}$ . Thanks in advance.

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How do you solve this with the unit circle? I keep getting , but my textbook answer says . Thanks in advance.

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Another question on Mathematics

$sec^{-1}(\frac{-2}{\sqrt{3}})=?$ How do you solve this with the unit circle? I keep getting $\frac{5\pi}{6}$ , but my textbook answer says $\frac{7\pi}{6}$ . Thanks in advance.