F(x)=sin^2x+cosec^2=?
1)f(x)<1. 2)f(x)=1
3)1<f(x)<2. 4)f(x)>=2
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F(x)=sin^2x+cosec^2=?
1)f(x)<1. 2)f(x)=1
3)1<f(x)<2. 4)f(x)>=2
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