Mathematics, 21.07.2019 10:00, bxbykyah

True or false ? explain your answer 18.csc^{-1} (csc(-\frac{\pi}{4} )) = -\frac{\pi}{4} 19.sec(sec^{-1} (\sqrt{3} ))=\sqrt{3}

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True or false ? explain your answer 18.csc^{-1} (csc(-\frac{\pi}{4} )) = -\frac{\pi}{4} 19.sec(se...