List questions from trigonometric-series

Published on 21 May 2021 - 5:13

184

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How to calculate the infinite series of $\sin x $ without using $\pi$

Published on 23 May 2021 - 18:06

273

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Series sum of sin log and cos log

Published on 27 May 2021 - 19:57

267

Views

Computing a Closed Form for an Infinite Series Involving ArcSins

Published on 31 May 2021 - 17:37

184

Views

Trigonometric Identities Using De Moivre's Theorem

Published on 05 Jun 2021 - 6:33

21

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Iteration Sets, uniformly convergence of functionsets

Published on 06 Jun 2021 - 7:04

315

Views

$\arctan(\frac{x+1}{x-1})$ to power series

Published on 07 Jun 2021 - 8:19

156

Views

Sum of random points on a (complex) sphere

Published on 09 Jun 2021 - 21:24

883

Views

Proving $\sum_{k=1}^{n}\cos\frac{2\pi k}{n}=0$

Published on 12 Jun 2021 - 2:55

100

Views

Compute the integer part of $(1+2\cos 20 ^{\circ})^n$

Published on 16 Jun 2021 - 11:11

19

Views

Is there a recursive formula for adding vectors based on their angle to find their position?

Published on 24 Mar 2026 - 17:30

77

Views

Proving an upper bound on trigonometric polynomial

Published on 24 Jun 2021 - 21:44

128

Views

Evaluate a product of sines of angles of multiples of 4 with some terms missing

Published on 03 Jul 2021 - 6:59

25

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Calculating portion of semicircle after rotaion

Published on 08 Jul 2021 - 12:32

310

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Simplifying $\sum_{{}^{m=1}_{m\ne n}}^N(1+(-1)^{m+n})\frac{\sin\frac{\pi mk}{N+1}\sin\frac{\pi m}{N+1}}{\cos\frac{\pi n}{N+1}-\cos\frac{\pi m}{N+1}}$

Published on 15 Jul 2021 - 11:31

List Question

Does $\sum_{k=2}^{\infty}\frac{\cos(k)}{\log(\log(k))}$ converge?

How to calculate the infinite series of $\sin x $ without using $\pi$

Series sum of sin log and cos log

Computing a Closed Form for an Infinite Series Involving ArcSins

Trigonometric Identities Using De Moivre's Theorem

Iteration Sets, uniformly convergence of functionsets

$\arctan(\frac{x+1}{x-1})$ to power series

Sum of random points on a (complex) sphere

Proving $\sum_{k=1}^{n}\cos\frac{2\pi k}{n}=0$

Compute the integer part of $(1+2\cos 20 ^{\circ})^n$

Is there a recursive formula for adding vectors based on their angle to find their position?

Proving an upper bound on trigonometric polynomial

Evaluate a product of sines of angles of multiples of 4 with some terms missing

Calculating portion of semicircle after rotaion

Simplifying $\sum_{{}^{m=1}_{m\ne n}}^N(1+(-1)^{m+n})\frac{\sin\frac{\pi mk}{N+1}\sin\frac{\pi m}{N+1}}{\cos\frac{\pi n}{N+1}-\cos\frac{\pi m}{N+1}}$

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