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

ynclankaedon

25.03.2021 •

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.

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Ответ:

fedora87

13.05.2022

Mathematics

1.5 cm x cm
5 km 30 km

cross multiply and divide-

1.5 x 30 = 5x
45 = 5x
divide each side by 5

x = 9 cm

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