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(Solved): plify \( \frac{\sin ^{2} \alpha}{1-\cos \alpha}-1 \) \( \cos \alpha \) \( \cos ^{2} \alpha \) 1 \( ...




plify \( \frac{\sin ^{2} \alpha}{1-\cos \alpha}-1 \)
\( \cos \alpha \)
\( \cos ^{2} \alpha \)
1
\( \sin \alpha \)
plify \( \frac{\sin ^{2} \alpha}{1-\cos \alpha}-1 \) \( \cos \alpha \) \( \cos ^{2} \alpha \) 1 \( \sin \alpha \)


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Given trigonometric expression sin2?1?cos???1
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