设sinθ+cosθ=-√2,则cos2θ=_______sin4θ=_______
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设sinθ+cosθ=-√2,则cos2θ=_______sin4θ=_______设sinθ+cosθ=-√2,则cos2θ=_______sin4θ=_______设sinθ+cosθ=-√2,则
设sinθ+cosθ=-√2,则cos2θ=_______sin4θ=_______
设sinθ+cosθ=-√2,则cos2θ=_______sin4θ=_______
设sinθ+cosθ=-√2,则cos2θ=_______sin4θ=_______
设sinθ+cosθ=-√2,则cos2θ=_______sin4θ=_______
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