Question

Using absolute values when determining distance between two points.

score 1.6k · Answer 1 · 2026-04-12 04:31:36

1.6k

Views

Using absolute values when determining distance between two points.

Published on 12 Apr 2026 - 4:31

score 2k · Answer 2 · 2026-04-15 02:57:26

2k

Views

Limit of a Rational Trigonometric Function $\lim_{x \to 0} \frac{\sin5x}{\sin4x}$

Published on 15 Apr 2026 - 2:57

score 198 · Answer 3 · 2026-04-14 03:15:00

198

Views

Where did I go wrong on trying to solve this question on an exam?

Published on 14 Apr 2026 - 3:15

score 796 · Answer 4 · 2026-04-11 11:47:59

796

Views

How to solve $x = \arccos(x)$

Published on 11 Apr 2026 - 11:47

score 79 · Answer 5 · 2026-04-22 10:38:15

79

Views

Problem calculating the argument of a complex variable

Published on 22 Apr 2026 - 10:38

score 584 · Answer 6 · 2026-04-17 15:33:20

584

Views

Without using the value for $\sin 18^°$ or $\cos 36^°$, prove that $4\sin 36^°\cos 18^°=\sqrt 5$

Published on 17 Apr 2026 - 15:33

score 61 · Answer 7 · 2026-04-17 16:00:17

61

Views

Prove that $ 1+ \cos A + \cos B + \cos C = 0$.

Published on 17 Apr 2026 - 16:00

score 135 · Answer 8 · 2026-04-17 01:02:04

135

Views

If $ (A_1A_2)^2 + (A_1A_3)^2.......... + (A_1A_n)^2= 14r^2$, then prove that the number of sides is 7.

Published on 17 Apr 2026 - 1:02

score 76 · Answer 9 · 2026-04-15 04:48:51

76

Views

Prove trigonometric identity: $\sin(A-D)\sin(B-D)\sin(C-D)=[\sin(D)]^3$

Published on 15 Apr 2026 - 4:48

score 1.9k · Answer 10 · 2026-04-16 00:32:57

1.9k

Views

Prove $\prod_{i=1}^{n-1} \sin(i\pi/n) = 2^{1-n} n$ without complex functions.

Published on 16 Apr 2026 - 0:32

score 72 · Answer 11 · 2026-04-16 17:09:54

72

Views

Proof for $\forall x$, $\exists y$ s.t $1/2 \le |x-y|\le 1$ and $ |\cos \pi x - \cos \pi y|\ge 1$

Published on 16 Apr 2026 - 17:09

score 74 · Answer 12 · 2026-04-12 10:20:31

74

Views

Trigonometry - proving an inequality

Published on 12 Apr 2026 - 10:20

score 134 · Answer 13 · 2026-04-12 05:09:14

134

Views

Trigonometry proof

Published on 12 Apr 2026 - 5:09

score 156 · Answer 14 · 2026-04-17 08:36:02

156

Views

I'm missing the right substitute $\sqrt3\cos x=1-\sin x$

Published on 17 Apr 2026 - 8:36

score 153 · Answer 15 · 2026-04-14 20:26:17

153

Views

$\cos x -1+\frac{x^2}{2!} \geq 0$ for every $x\in \mathbb{R} $

Published on 14 Apr 2026 - 20:26

List Question

Using absolute values when determining distance between two points.

Limit of a Rational Trigonometric Function $\lim_{x \to 0} \frac{\sin5x}{\sin4x}$

Where did I go wrong on trying to solve this question on an exam?

How to solve $x = \arccos(x)$

Problem calculating the argument of a complex variable

Without using the value for $\sin 18^°$ or $\cos 36^°$, prove that $4\sin 36^°\cos 18^°=\sqrt 5$

Prove that $ 1+ \cos A + \cos B + \cos C = 0$.

If $ (A_1A_2)^2 + (A_1A_3)^2.......... + (A_1A_n)^2= 14r^2$, then prove that the number of sides is 7.

Prove trigonometric identity: $\sin(A-D)\sin(B-D)\sin(C-D)=[\sin(D)]^3$

Prove $\prod_{i=1}^{n-1} \sin(i\pi/n) = 2^{1-n} n$ without complex functions.

Proof for $\forall x$, $\exists y$ s.t $1/2 \le |x-y|\le 1$ and $ |\cos \pi x - \cos \pi y|\ge 1$

Trigonometry - proving an inequality

Trigonometry proof

I'm missing the right substitute $\sqrt3\cos x=1-\sin x$

$\cos x -1+\frac{x^2}{2!} \geq 0$ for every $x\in \mathbb{R} $

Trending Questions

Popular # Hahtags

Popular Questions