Question

Greatest value of (cot(A/2)+cot(B/2)+cot(C/2))/(cotA+cotB+cotC) in triangleABC

score 292 · Answer 1 · 2026-03-25 15:17:56

292

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Greatest value of (cot(A/2)+cot(B/2)+cot(C/2))/(cotA+cotB+cotC) in triangleABC

Published on 25 Mar 2026 - 15:17

score 65 · Answer 2 · 2018-03-19 16:07:11

65

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Trigonometric solution

Published on 19 Mar 2018 - 16:07

score 74 · Answer 3 · 2018-03-19 17:52:44

74

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Trigonometric equation $2\sin(2x)+3=2\sin^2(x)$

Published on 19 Mar 2018 - 17:52

score 73 · Answer 4 · 2018-03-19 18:18:41

73

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Proving that an equation holds when we divide a square in triangles

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score 3.8k · Answer 5 · 2026-03-25 19:11:16

3.8k

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Use the power series for $\arctan(x)$ to derive an expression for $\pi$

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score 7.3k · Answer 6 · 2026-03-25 14:07:55

7.3k

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How does WolframAlpha get an exact answer here? ${}{}$

Published on 25 Mar 2026 - 14:07

score 366 · Answer 7 · 2026-03-29 21:09:05

366

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Is there a bell-curve-like function where n and m control the curve shape between 0 and 1?

Published on 29 Mar 2026 - 21:09

score 261 · Answer 8 · 2026-03-29 15:16:02

261

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If $f(x)=\frac{x(x^2-1)}{(x^2+1)^2}$, find four distinct rational $x_i> 1$ such that $f(x_2)-f(x_0)=2f(x_2)-f(x_1)=f(x_3)$

Published on 29 Mar 2026 - 15:16

score 95 · Answer 9 · 2018-03-20 04:10:22

95

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score 8.2k · Answer 10 · 2026-03-29 12:23:10

8.2k

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score 40 · Answer 11 · 2026-03-25 07:38:15

40

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basic trigonometric equation query

Published on 25 Mar 2026 - 7:38

score 67 · Answer 12 · 2018-03-20 15:04:41

67

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Trigonometric identity. How can I prove that $\sin A = 2\sin\frac{A}2\cos\frac{A}2$?

Published on 20 Mar 2018 - 15:04

score 137 · Answer 13 · 2018-03-20 20:53:12

137

Views

How to find the rational representation of angle?

Published on 20 Mar 2018 - 20:53

score 31 · Answer 14 · 2018-03-20 21:13:47

31

Views

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Published on 20 Mar 2018 - 21:13

score 100 · Answer 15 · 2018-03-20 21:56:07

100

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What is the solution of the equation $\sin x \cos x -\sin^2 x =\frac14(\sqrt{6}-2)$?

Published on 20 Mar 2018 - 21:56

List Question

Greatest value of (cot(A/2)+cot(B/2)+cot(C/2))/(cotA+cotB+cotC) in triangleABC

Trigonometric solution

Trigonometric equation $2\sin(2x)+3=2\sin^2(x)$

Proving that an equation holds when we divide a square in triangles

Use the power series for $\arctan(x)$ to derive an expression for $\pi$

How does WolframAlpha get an exact answer here? ${}{}$

Is there a bell-curve-like function where n and m control the curve shape between 0 and 1?

If $f(x)=\frac{x(x^2-1)}{(x^2+1)^2}$, find four distinct rational $x_i> 1$ such that $f(x_2)-f(x_0)=2f(x_2)-f(x_1)=f(x_3)$

How to smoothly interpolate between wave amplitudes?

Prove $\cos(x)$ is continuous

basic trigonometric equation query

Trigonometric identity. How can I prove that $\sin A = 2\sin\frac{A}2\cos\frac{A}2$?

How to find the rational representation of angle?

Vectorial spaces involving trigonometry

What is the solution of the equation $\sin x \cos x -\sin^2 x =\frac14(\sqrt{6}-2)$?

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