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calculate $\cos(\alpha+\beta)$ and $\sin(\alpha+\beta)$

score 267 · Answer 1 · 2021-12-13 18:32:55

267

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calculate $\cos(\alpha+\beta)$ and $\sin(\alpha+\beta)$

Published on 13 Dec 2021 - 18:32

score 2.3k · Answer 2 · 2021-12-15 20:16:04

2.3k

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Why is $\cos(\alpha+\beta) = \cos(\alpha)\cos(\beta)−\sin(\alpha)\sin(\beta)$?

Published on 15 Dec 2021 - 20:16

score 1.5k · Answer 3 · 2021-12-15 21:20:40

1.5k

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score 72 · Answer 4 · 2026-04-09 21:10:22

72

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Doing a complex 2D transformation

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score 237 · Answer 5 · 2021-12-17 08:02:08

237

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Find the rotation matrix that relates two skew lines

Published on 17 Dec 2021 - 8:02

score 143 · Answer 6 · 2021-12-18 15:40:50

143

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Published on 18 Dec 2021 - 15:40

score 1.3k · Answer 7 · 2021-12-21 07:01:23

1.3k

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Why we premultiply and post multiply

Published on 21 Dec 2021 - 7:01

score 209 · Answer 8 · 2026-04-09 22:50:29

209

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Calculating centre of rotation of a line based on endpoint coordinates in 3D where line translation may also occur.

Published on 09 Apr 2026 - 22:50

score 61 · Answer 9 · 2021-12-22 13:04:50

61

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How to use Exercise 25 or Exercise 26 to prove $\operatorname{Re}\mathbf{x}$ and $\operatorname{Im}\mathbf{x}$ are linearly independent?

Published on 22 Dec 2021 - 13:04

score 1.2k · Answer 10 · 2021-12-22 15:35:32

1.2k

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Rotating 3D coordinates to 2D plane

Published on 22 Dec 2021 - 15:35

score 123 · Answer 11 · 2026-04-11 02:23:02

123

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Published on 11 Apr 2026 - 2:23

score 288 · Answer 12 · 2026-03-26 22:54:15

288

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Eigenspace of Kronecker power of a 2*2 rotation matrix

Published on 26 Mar 2026 - 22:54

score 136 · Answer 13 · 2026-04-11 08:17:02

136

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Deriving form of general rotation matrix along an axis using calculus

Published on 11 Apr 2026 - 8:17

score 107 · Answer 14 · 2021-12-26 14:26:07

107

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Rotation matrices for N dimensional rotation about N-2 dimensional subspace

Published on 26 Dec 2021 - 14:26

score 143 · Answer 15 · 2026-04-01 03:42:58

143

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Fake Proof for Dimension of $SO(n)$ (rotations)?

Published on 01 Apr 2026 - 3:42

List Question

calculate $\cos(\alpha+\beta)$ and $\sin(\alpha+\beta)$

Why is $\cos(\alpha+\beta) = \cos(\alpha)\cos(\beta)−\sin(\alpha)\sin(\beta)$?

Can I extract yaw, pitch and roll from XYZ and/or latitude, longitude and altitude information

Doing a complex 2D transformation

Find the rotation matrix that relates two skew lines

Calculate rotation of a point set

Why we premultiply and post multiply

Calculating centre of rotation of a line based on endpoint coordinates in 3D where line translation may also occur.

How to use Exercise 25 or Exercise 26 to prove $\operatorname{Re}\mathbf{x}$ and $\operatorname{Im}\mathbf{x}$ are linearly independent?

Rotating 3D coordinates to 2D plane

How to find matrix which rotates one unit vector into another in 3D space?

Eigenspace of Kronecker power of a 2*2 rotation matrix

Deriving form of general rotation matrix along an axis using calculus

Rotation matrices for N dimensional rotation about N-2 dimensional subspace

Fake Proof for Dimension of $SO(n)$ (rotations)?

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