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Multiple Choice
Evaluate the expression. sin−1(23)
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Verified step by step guidance
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Understand that the problem involves evaluating the inverse sine function, \( \sin^{-1} \), which gives the angle whose sine is the given value.
Recognize that \( \sin^{-1} \left( \frac{\sqrt{3}}{2} \right) \) asks for the angle whose sine is \( \frac{\sqrt{3}}{2} \).
Recall that the sine of \( \frac{\pi}{3} \) is \( \frac{\sqrt{3}}{2} \). Therefore, \( \sin^{-1} \left( \frac{\sqrt{3}}{2} \right) = \frac{\pi}{3} \).
Consider the range of the inverse sine function, which is \([-\frac{\pi}{2}, \frac{\pi}{2}]\). This means the angle \( \frac{\pi}{3} \) is valid within this range.
Conclude that the correct answer is \( \frac{\pi}{3} \), as it is the angle within the range of \( \sin^{-1} \) that corresponds to the given sine value.