If , what is the sign of…

MATHEMATICS · Single correct · A Level · Mathematics · Trigonometry · Trigonometry

Problem

If 0<θ<π20<\theta<\dfrac{\pi}{2}, what is the sign of sin⁡(−θ)\sin(-\theta)? (a) Positive\text{Positive} (b) Zero\text{Zero} (c) Negative\text{Negative} (d) Cannot be determined\text{Cannot\ be\ determined}

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