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Treating the utility matrix as boolean ( buy or not buy ) , compute the Cosine distance between zephyros and dadvador. Please answer to three

Treating the utility matrix as boolean (buy or not buy), compute the Cosine distance between zephyros and dadvador. Please answer to three decimal places.
Note: It is possible to solve this question mathematically, but it may be easier to solve this question programmatically.

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