cot²0/1+cosec0=cosec0
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cot0=undefined
cosec0=undefined
cot^20/1+cosec0
=undefined+undefined
hence the ans is infinity or undefined or cosec0=rhs..
hence proved
cosec0=undefined
cot^20/1+cosec0
=undefined+undefined
hence the ans is infinity or undefined or cosec0=rhs..
hence proved
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