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Given that $\theta = \sin^{-1}\left(-\frac{3}{8}\right)$, determine which are true.

Mark all that apply.

A

$\cos\theta=\dfrac{\sqrt{55}}{8}$

B

$\tan\theta = -\dfrac{3\sqrt{73}}{73}$

C

$\csc\theta = \dfrac{8}{3}$

D

$\sec\theta = \dfrac{8\sqrt{55}}{55}$

E

$\cot\theta = -\dfrac{\sqrt{73}}{3}$

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