What is the sum from n=1 to infinity of cos(7/n) ?

The sum from n=1 to infinity of cos(7/n) is diverges

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sum from n=1 to infinity of cos(7/n)

n = 1 \sum \infty cos (\frac{7}{n})

diverges

Solution steps

n = 1 \sum \infty cos (\frac{7}{n})

Apply Series Divergence Test:

diverges

= diverges

n = 0 \sum \infty \frac{1}{4 + 3 n}

n = 2 \sum \infty \frac{3}{n ln ^{9} ( n )}

k = 2 \sum \infty \frac{1}{k ln ^{2} ( k )}

n = 0 \sum \infty \frac{n !}{50 0 ^{n}}

n = 1 \sum \infty (- 1)^{n - 1} n

What is the sum from n=1 to infinity of cos(7/n) ?
The sum from n=1 to infinity of cos(7/n) is diverges