Hi Can someone explain to be how you would simplify the following questions: 1)$\displaystyle sin^{-1}(cos\frac{5\pi}{6})$ 2)$\displaystyle tan(sin^{-1}(\frac{-\sqrt2}{2}))$ P.S
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just evaluate the expression inside the parenthesis and then you'll have a trig function of a number, which you can then evaluate again... do you know how the inverse trig functions work in terms of domain restrictions?
ok thanks i think i know how to do it now.
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