Simplify the following expressions completely (or write “DNE” if the question has no answer). all answers in radians  [a] arccos (square root of − 2/ 3 ) [b] cos(arctan square root of x ) [c] sin(arcsin square root of 11 / 3) [d] arctan(tan 18π/7 ) [e] arccos(csc 3π/2 )

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A: Given that  α=arcsin-23⇒sinα=-23secβ=54⇒1cosβ=54⇒cosβ=45,tanβ&lt;0

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