Find the value of $sin (- 150^{\circ})$

- \frac{1}{2}

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\frac{1}{2}

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- \frac{1}{\sqrt{2}}

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\frac{1}{\sqrt{2}}

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Solution

The correct option is A $- \frac{1}{2}$
$sin (- 150) = - sin (150) = - sin (90 + 60) = - cos 60 = - \frac{1}{2}$

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