Question

Finding the intersection of two lines, in polar coordinates

score 2.5k · Answer 1 · 2018-05-16 02:19:59

2.5k

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Finding the intersection of two lines, in polar coordinates

Published on 16 May 2018 - 2:19

score 2.5k · Answer 2 · 2018-05-16 02:32:13

2.5k

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Find the values of $(2\sin x-1)(\cos x+1)=0$

Published on 16 May 2018 - 2:32

score 8.9k · Answer 3 · 2026-03-25 17:37:34

8.9k

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The area of a triangle inscribed in a circle problem

Published on 25 Mar 2026 - 17:37

score 58 · Answer 4 · 2026-03-24 23:42:51

58

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Why does the sign flip when substituting in Euler's formula

Published on 24 Mar 2026 - 23:42

score 151 · Answer 5 · 2026-04-02 15:04:41

151

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If $\frac{\tan(a+b-c)}{\tan(a-b+c)}=\frac{\tan c}{\tan b}$, then $\sin(b-c)=0$ or $\sin 2a + \sin2b + \sin 2c=0$

Published on 02 Apr 2026 - 15:04

score 230 · Answer 6 · 2026-04-03 19:22:52

230

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Prove that if $0<\theta<\frac\pi2$, then $1-\frac{\theta^2}2<\cos\theta<1-\frac{\theta^2}2+\frac{\theta^4}{24}$

Published on 03 Apr 2026 - 19:22

score 32 · Answer 7 · 2018-05-16 16:44:46

32

Views

Solve the equation and Find the General Solution.

Published on 16 May 2018 - 16:44

score 101 · Answer 8 · 2018-05-17 12:40:32

101

Views

Finding $\sin 2x+\sin 4x+\cdots+\sin 22x$

Published on 17 May 2018 - 12:40

score 252 · Answer 9 · 2026-03-26 01:34:43

252

Views

The sum of angles in a triangle is greater than 180?

Published on 26 Mar 2026 - 1:34

score 129 · Answer 10 · 2018-05-17 21:10:53

129

Views

Scale map height

Published on 17 May 2018 - 21:10

score 405 · Answer 11 · 2018-05-18 03:07:29

405

Views

${1 \over \sqrt{3}} \sum\limits _{r=0}^4 \tan \left( \frac{\pi}{15}+\frac{r\pi}{5} \right)=$?

Published on 18 May 2018 - 3:07

score 632 · Answer 12 · 2018-05-18 05:36:31

632

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Solve for $x$ if $\tan^{-1}{\frac{\sqrt{1+x^2}-1}{x}}=\frac{\pi}{45}$

Published on 18 May 2018 - 5:36

score 2.4k · Answer 13 · 2026-03-26 01:29:08

2.4k

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Ratio of the area of the inscribed circle to the area of the circle circumscribing an equilateral triangle

Published on 26 Mar 2026 - 1:29

score 136 · Answer 14 · 2018-05-18 08:14:41

136

Views

What is the degree of y in sin y?

Published on 18 May 2018 - 8:14

score 1.3k · Answer 15 · 2018-05-18 10:29:42

1.3k

Views

Angle of elevation problem

Published on 18 May 2018 - 10:29

List Question

Finding the intersection of two lines, in polar coordinates

Find the values of $(2\sin x-1)(\cos x+1)=0$

The area of a triangle inscribed in a circle problem

Why does the sign flip when substituting in Euler's formula

If $\frac{\tan(a+b-c)}{\tan(a-b+c)}=\frac{\tan c}{\tan b}$, then $\sin(b-c)=0$ or $\sin 2a + \sin2b + \sin 2c=0$

Prove that if $0<\theta<\frac\pi2$, then $1-\frac{\theta^2}2<\cos\theta<1-\frac{\theta^2}2+\frac{\theta^4}{24}$

Solve the equation and Find the General Solution.

Finding $\sin 2x+\sin 4x+\cdots+\sin 22x$

The sum of angles in a triangle is greater than 180?

Scale map height

${1 \over \sqrt{3}} \sum\limits _{r=0}^4 \tan \left( \frac{\pi}{15}+\frac{r\pi}{5} \right)=$?

Solve for $x$ if $\tan^{-1}{\frac{\sqrt{1+x^2}-1}{x}}=\frac{\pi}{45}$

Ratio of the area of the inscribed circle to the area of the circle circumscribing an equilateral triangle

What is the degree of y in sin y?

Angle of elevation problem

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