Question: Suppose that = 1/7 for 2 < < . a) Use the Pythagorean identity to find . b) What is ? c) Now suppose that

Suppose that = 1/7 for 2 < < . a) Use the Pythagorean identity to find . b) What is ? c) Now suppose that cos (2)= 2/7 and is in the first quadrant. Find and exactly.

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4. What specific changes in the environment have taken place in relation to the information we have collected?