List questions from trigonometric-series

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How to determine if this converges?

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What function does this trigonometric series represent?

Published on 29 Oct 2014 - 16:21

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Sum of trigonometric series $\sum_{m=1}^{N-1} \frac{\sin(4\pi mk/N)}{\sin ^2 (\pi m/N) }$

Published on 30 Oct 2014 - 21:18

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Find the values of $a$ and $b$ ~ Trigonometry

Published on 31 Oct 2014 - 14:32

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How do I evaluate $\cos(x) + \cos (2x) +\cos (3x) + ... + \cos (nx)$?

Published on 02 Nov 2014 - 6:37

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What would be a power series for $f(z)=\sin(z)$ centered at $1$?

Published on 04 Nov 2014 - 9:12

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Reverse of an iterative function

Published on 13 Nov 2014 - 14:06

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Does $\sum\limits_{x=1}^\infty\sin(x)$ converge?

Published on 21 Nov 2014 - 20:49

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Evaluating $\sum\limits_{k=0}^n\cos(kx)$ and $\sum\limits_{k=0}^n\sin(kx)$ without Complex Numbers

Published on 22 Nov 2014 - 10:51

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Finding Sum for Infinite Series

Published on 24 Nov 2014 - 23:11

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The asymptotic behavior of $\sum_{n=1}^\infty\frac{1-\cos(x4^n)}{2^n}$ as $x\to 0$

Published on 25 Nov 2014 - 21:35

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What is the approximation of trigonometric function by simple function

Published on 25 Mar 2026 - 12:52

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Prove using De Moivre's formula,that $\sum\limits_{k=0}^{n}\sin(kx)=\frac{1}{2}\cot(x/2)-\frac{\cos(nx+(x/2))}{2\sin(x/2)}$

Published on 06 Dec 2014 - 0:51

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Computing the trigonometric sum $ \sum_{j=1}^{n} \cos(j) $

Published on 09 Dec 2014 - 17:53

List Question

How to determine if this series converges?

How to determine if this converges?

What function does this trigonometric series represent?

Sum of trigonometric series $\sum_{m=1}^{N-1} \frac{\sin(4\pi mk/N)}{\sin ^2 (\pi m/N) }$

Find the values of $a$ and $b$ ~ Trigonometry

How do I evaluate $\cos(x) + \cos (2x) +\cos (3x) + ... + \cos (nx)$?

What would be a power series for $f(z)=\sin(z)$ centered at $1$?

Reverse of an iterative function

Does $\sum\limits_{x=1}^\infty\sin(x)$ converge?

Evaluating $\sum\limits_{k=0}^n\cos(kx)$ and $\sum\limits_{k=0}^n\sin(kx)$ without Complex Numbers

Finding Sum for Infinite Series

The asymptotic behavior of $\sum_{n=1}^\infty\frac{1-\cos(x4^n)}{2^n}$ as $x\to 0$

What is the approximation of trigonometric function by simple function

Prove using De Moivre's formula,that $\sum\limits_{k=0}^{n}\sin(kx)=\frac{1}{2}\cot(x/2)-\frac{\cos(nx+(x/2))}{2\sin(x/2)}$

Computing the trigonometric sum $ \sum_{j=1}^{n} \cos(j) $

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