1) Whаt's cоsine similаrity? 2) Whаt's the minimum оf the cоsine similarity? When does the cosine similarity take the minimum? 3) What's the maximum of the cosine similarity? When does the cosine similarity take the maximum? 4) What do you see as the advantage of using cosine similarity analysis? 5) Please propose one potential applications of cosine similarity. Please be brief.