1.

Find the set of values of cosec-1(√3/2).

Answer»

Let y = cosec-1(√3/2)

We know that,

Domain of y = cosec–1 x is (– ∞, 1] U [1, ∞]

But √3/2 < 1

Therefore, it can not be a value of y.

Hence, Set of values of cosec–1(√3/2) is a null set.



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