Discussion
What is the value of \(\sin(-60°)\)?
Answer: B
Sine is an odd function.
\[ \sin(-\theta) = -\sin\theta \]
\[ \sin(-60^{\circ}) = -\frac{\sqrt{3}}{2} \]
Cosine, by contrast, is even: \( \cos(-\theta) = \cos\theta \).
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