Answer:
Explanation:
cot = cos/sin = 1/sqrt(7/2) * sqrt(5/7) = 1/sqrt(5/2) is the answer.
its because
If sec = sqrt(7/2)
cos = 1 /sqrt(7/2)
cos^2 + sin^2 = 1
cos^2 = 1/ (7/2) = 2/7
2/7 + sin^2 = 1
sin^2 = 5/7
sin = sqrt(5/7)
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