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∣∣∣√1−sinθ1+sinθ+√1+sinθ1−sinθ∣∣∣=−2cosθ,whereπ2<θπ |
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Answer» ∣∣∣√1−sinθ1+sinθ+√1+sinθ1−sinθ∣∣∣=−2cosθ,whereπ2<θπ |
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