Question

Cosine interpolation reverts to linear interpolation in higher dimensions?

score 744 · Answer 1 · 2026-04-13 13:48:07

744

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Cosine interpolation reverts to linear interpolation in higher dimensions?

Published on 13 Apr 2026 - 13:48

score 172 · Answer 2 · 2026-04-11 18:52:12

172

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Increase angle from first to second quadrant, and then decrease it from third to fourth

Published on 11 Apr 2026 - 18:52

score 87 · Answer 3 · 2026-04-18 01:07:54

87

Views

Find all $(x,a,b,c)\in \mathbb{Q}_+\times\mathbb{N}^{*3}$ such that $\cos(\pi x)=\frac{\sqrt {a}+b}{c}$

Published on 18 Apr 2026 - 1:07

score 178 · Answer 4 · 2026-04-17 00:39:24

178

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Find all $x$ such that $\sin x = \frac{4}{5}$ and $\cos x = \frac{3}{5}$.

Published on 17 Apr 2026 - 0:39

score 50 · Answer 5 · 2026-04-11 16:36:35

50

Views

Some tricky trigonometric problem

Published on 11 Apr 2026 - 16:36

score 189 · Answer 6 · 2026-04-12 23:09:19

189

Views

How do I solve the equation $2\sin(3x)\cos(4x)=1$?

Published on 12 Apr 2026 - 23:09

score 99 · Answer 7 · 2026-04-16 15:25:48

99

Views

why is $\cos x + i \sin x = i^\frac{x}{90^\circ}$

Published on 16 Apr 2026 - 15:25

score 1.9k · Answer 8 · 2026-04-14 01:37:52

1.9k

Views

Law of Cosines vs. Law of Sines Two different Answers

Published on 14 Apr 2026 - 1:37

score 55 · Answer 9 · 2026-04-15 23:14:56

55

Views

Explaining why $c_1e^{-\beta t}\sin(⁡rt) + c_2e^{-\beta t}\cos⁡(⁡rt) = Ae^{-\beta t}\cos(rt+\phi)$

Published on 15 Apr 2026 - 23:14

score 117 · Answer 10 · 2026-04-19 12:20:01

117

Views

Given Two Circles Intersect Each Other. Find the Area. Does This Question Have an Error?

Published on 19 Apr 2026 - 12:20

score 53 · Answer 11 · 2026-04-12 09:28:35

53

Views

May I assume that an undefined fraction has a denominator equal to 0?

Published on 12 Apr 2026 - 9:28

score 102 · Answer 12 · 2026-04-17 00:08:11

102

Views

If $x < 90^\circ$, such that $\sin x = \frac {2}{\sqrt{5}}$, find $\cos (x)$

Published on 17 Apr 2026 - 0:08

score 2.5k · Answer 13 · 2026-04-12 09:15:18

2.5k

Views

Finding values of $\tan^{-1} (2i)$.

Published on 12 Apr 2026 - 9:15

score 86 · Answer 14 · 2026-04-19 12:55:21

86

Views

Find the circumference in terms of r

Published on 19 Apr 2026 - 12:55

score 295 · Answer 15 · 2026-04-11 18:42:28

295

Views

Trigonometric equation obtained from Ceva

Published on 11 Apr 2026 - 18:42

List Question

Cosine interpolation reverts to linear interpolation in higher dimensions?

Increase angle from first to second quadrant, and then decrease it from third to fourth

Find all $(x,a,b,c)\in \mathbb{Q}_+\times\mathbb{N}^{*3}$ such that $\cos(\pi x)=\frac{\sqrt {a}+b}{c}$

Find all $x$ such that $\sin x = \frac{4}{5}$ and $\cos x = \frac{3}{5}$.

Some tricky trigonometric problem

How do I solve the equation $2\sin(3x)\cos(4x)=1$?

why is $\cos x + i \sin x = i^\frac{x}{90^\circ}$

Law of Cosines vs. Law of Sines Two different Answers

Explaining why $c_1e^{-\beta t}\sin(⁡rt) + c_2e^{-\beta t}\cos⁡(⁡rt) = Ae^{-\beta t}\cos(rt+\phi)$

Given Two Circles Intersect Each Other. Find the Area. Does This Question Have an Error?

May I assume that an undefined fraction has a denominator equal to 0?

If $x < 90^\circ$, such that $\sin x = \frac {2}{\sqrt{5}}$, find $\cos (x)$

Finding values of $\tan^{-1} (2i)$.

Find the circumference in terms of r

Trigonometric equation obtained from Ceva

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