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Which database model is best used for data warehouse and data mining

Verify each identity[tex] \frac{csc}{cot \: x \: + \: tan \: x} = cos \: x[/tex]

Refer to the figure and match the theorem that supports the statement.1.if chords are =, then arcs are =.if bc = de, then arc bc = arc de2.if arcs are =, then chords are =.if arc bc = arc de, then bc = de3.diameters perpen