Question

Closed form of :$\int\tan ( e^{-x²})\ d x$ Over reals

score 101 · Answer 1 · 2026-03-25 06:32:03

101

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Closed form of :$\int\tan ( e^{-x²})\ d x$ Over reals

Published on 25 Mar 2026 - 6:32

score 52 · Answer 2 · 2026-03-25 09:24:25

52

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prove trigonometry identity for $\sin\alpha+\sin2\alpha+\sin3\alpha+...+\sin N\alpha$, whithout using induction

Published on 25 Mar 2026 - 9:24

score 81 · Answer 3 · 2018-05-02 14:33:25

81

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How to numerically or algebraically (preferably algebraically) solve the equation $\frac{x}{5} + \cos2x = 2$

Published on 02 May 2018 - 14:33

score 72 · Answer 4 · 2026-03-27 14:51:56

72

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What is wrong in my answer? Subject: finding the integral of $\cot x$

Published on 27 Mar 2026 - 14:51

score 89 · Answer 5 · 2026-04-01 22:18:50

89

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Result comparison of a trigonometric equation

Published on 01 Apr 2026 - 22:18

score 814 · Answer 6 · 2018-05-03 04:55:52

814

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What is the meaning of y = sin(x) over the interval [0,1]?

Published on 03 May 2018 - 4:55

score 59 · Answer 7 · 2018-05-03 05:21:08

59

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$\cot x - \tan x = 2\cot 2x$, but the period on the left is $\pi$, while on the right it's $\pi/2$. Shouldn't the periods match?

Published on 03 May 2018 - 5:21

score 185 · Answer 8 · 2026-03-25 09:50:01

185

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Proving the identity $\frac{1}{\tan x}+\tan x=\frac1{\sin x\cos x}$

Published on 25 Mar 2026 - 9:50

score 330 · Answer 9 · 2026-04-03 19:35:49

330

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The history of trigonometry in two old stories

Published on 03 Apr 2026 - 19:35

score 1.3k · Answer 10 · 2018-05-03 18:08:35

1.3k

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Least Positive integer satisfying the condition $x^{2} -4x > \cot^{-1}x$

Published on 03 May 2018 - 18:08

score 110 · Answer 11 · 2026-03-28 02:04:52

110

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Determine the values of $t$ that make the two vectors orthogonal

Published on 28 Mar 2026 - 2:04

score 1k · Answer 12 · 2026-03-25 04:41:12

1k

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Find distance from center of equilateral triangle to edge in given angle

Published on 25 Mar 2026 - 4:41

score 569 · Answer 13 · 2018-05-03 20:14:59

Why is $\frac{0.5}{ \cos^2(30)} = \frac{\tan(30)}{\cos(30)} $, but $\frac{0.5}{ \cos^2(13) } \neq \frac{\tan(13)}{\cos(13)} $?

score 351 · Answer 14 · 2026-03-25 14:37:58

351

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Are there any (more) consecutive numbers that are functional in the Pythagorean Theorem?

Published on 25 Mar 2026 - 14:37

score 828 · Answer 15 · 2018-05-04 01:11:02

828

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Finding the Speed of a Moving Shadow During a Specific Point

Published on 04 May 2018 - 1:11

List Question

Closed form of :$\int\tan ( e^{-x²})\ d x$ Over reals

prove trigonometry identity for $\sin\alpha+\sin2\alpha+\sin3\alpha+...+\sin N\alpha$, whithout using induction

How to numerically or algebraically (preferably algebraically) solve the equation $\frac{x}{5} + \cos2x = 2$

What is wrong in my answer? Subject: finding the integral of $\cot x$

Result comparison of a trigonometric equation

What is the meaning of y = sin(x) over the interval [0,1]?

$\cot x - \tan x = 2\cot 2x$, but the period on the left is $\pi$, while on the right it's $\pi/2$. Shouldn't the periods match?

Proving the identity $\frac{1}{\tan x}+\tan x=\frac1{\sin x\cos x}$

The history of trigonometry in two old stories

Least Positive integer satisfying the condition $x^{2} -4x > \cot^{-1}x$

Determine the values of $t$ that make the two vectors orthogonal

Find distance from center of equilateral triangle to edge in given angle

Why is $\frac{0.5}{ \cos^2(30)} = \frac{\tan(30)}{\cos(30)} $, but $\frac{0.5}{ \cos^2(13) } \neq \frac{\tan(13)}{\cos(13)} $?

Are there any (more) consecutive numbers that are functional in the Pythagorean Theorem?

Finding the Speed of a Moving Shadow During a Specific Point

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