1.

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

Answer»

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



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