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Basic Inverse Trigonometric Functions

The principal...

Question

The principal value of $s i n^{- 1} (- \frac{1}{2})$ is

A

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B

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C

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D

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Solution

The correct option is D
The prinicipal value of
$s i n^{- 1} (- \frac{1}{2}) = s i n^{- 1} s i n (- 30^{\circ}) = - \frac{π}{6}$ .

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