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Mathematics, 25.03.2021 14:00 13albrad

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...
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