Question

The ratio of the ball's volume to the volume of the cone

score 174 · Answer 1 · 2018-01-27 17:04:39

174

Views

The ratio of the ball's volume to the volume of the cone

Published on 27 Jan 2018 - 17:04

score 348 · Answer 2 · 2018-01-27 17:06:53

348

Views

Trigonometry problem with pentagons sin cos

Published on 27 Jan 2018 - 17:06

score 2.5k · Answer 3 · 2026-03-24 20:42:38

2.5k

Views

Express $2\tan^{-1}x$ in terms of $\sin^{-1}$ and $\cos^{-1}$

Published on 24 Mar 2026 - 20:42

score 467 · Answer 4 · 2018-01-27 18:55:38

467

Views

Finding the "Larger" of Two Cosine Values

Published on 27 Jan 2018 - 18:55

score 56 · Answer 5 · 2026-03-25 06:07:01

56

Views

Maximum of $\frac{1 -\cos(lx)}{1 - \cos(x)}$ on $[\frac{\pi}{l}, 2\pi - \frac{\pi}{l}$]

Published on 25 Mar 2026 - 6:07

score 1k · Answer 6 · 2018-01-27 23:02:51

1k

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How do I find the period of $e^{j\pi t}\cos(\frac{2\pi t}{3})$?

Published on 27 Jan 2018 - 23:02

score 5.4k · Answer 7 · 2026-03-29 18:20:53

5.4k

Views

Why does the arc length formula θ = S/R include θ and not tan θ like regular trigonometry?

Published on 29 Mar 2026 - 18:20

score 231 · Answer 8 · 2026-03-24 23:42:54

231

Views

Trigonometry problem, Evaluate: $\frac {1}{\sin 18°}$

Published on 24 Mar 2026 - 23:42

score 33 · Answer 9 · 2026-03-25 12:34:36

33

Views

Find all power of two outputs from an equation

Published on 25 Mar 2026 - 12:34

score 2.1k · Answer 10 · 2018-01-28 17:52:54

2.1k

Views

Why is $\sin(x^3)$ odd?

Published on 28 Jan 2018 - 17:52

score 261 · Answer 11 · 2026-03-24 20:33:37

261

Views

Showing that $\sum_{j=0}^{2n-1}{\cos^n(\frac{j\pi}{2n})(2\cos(\frac{2j\pi}n)+1)\cos(\frac{j\pi}2-\frac{2j\pi}n)}$ is never an integer for $n>10$

Published on 24 Mar 2026 - 20:33

score 530 · Answer 12 · 2026-03-19 20:39:03

530

Views

2 rectangles and 1 square

Published on 19 Mar 2026 - 20:39

score 2.3k · Answer 13 · 2026-03-30 11:37:08

2.3k

Views

Solid Angle Trigonometry?

Published on 30 Mar 2026 - 11:37

score 215 · Answer 14 · 2018-01-29 10:38:13

215

Views

Finding $\tan x$ given $\cos x=\frac34$ where $180^\circ<x<270^\circ$

Published on 29 Jan 2018 - 10:38

score 115 · Answer 15 · 2026-03-24 20:33:27

115

Views

Given a pair of vectors find an orthogonal pair that is phase-shifted

Published on 24 Mar 2026 - 20:33

List Question

The ratio of the ball's volume to the volume of the cone

Trigonometry problem with pentagons sin cos

Express $2\tan^{-1}x$ in terms of $\sin^{-1}$ and $\cos^{-1}$

Finding the "Larger" of Two Cosine Values

Maximum of $\frac{1 -\cos(lx)}{1 - \cos(x)}$ on $[\frac{\pi}{l}, 2\pi - \frac{\pi}{l}$]

How do I find the period of $e^{j\pi t}\cos(\frac{2\pi t}{3})$?

Why does the arc length formula θ = S/R include θ and not tan θ like regular trigonometry?

Trigonometry problem, Evaluate: $\frac {1}{\sin 18°}$

Find all power of two outputs from an equation

Why is $\sin(x^3)$ odd?

Showing that $\sum_{j=0}^{2n-1}{\cos^n(\frac{j\pi}{2n})(2\cos(\frac{2j\pi}n)+1)\cos(\frac{j\pi}2-\frac{2j\pi}n)}$ is never an integer for $n>10$

2 rectangles and 1 square

Solid Angle Trigonometry?

Finding $\tan x$ given $\cos x=\frac34$ where $180^\circ<x<270^\circ$

Given a pair of vectors find an orthogonal pair that is phase-shifted

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