Question

Does $\tan\left(\frac{5\pi}{4}-\alpha\right)=\tan\left(\frac{\pi}{4}-\alpha\right)$ hold for any angle, or only when $\pi/4-\alpha$ is acute?

score 165 · Answer 1 · 2026-04-16 13:41:38

165

Views

Does $\tan\left(\frac{5\pi}{4}-\alpha\right)=\tan\left(\frac{\pi}{4}-\alpha\right)$ hold for any angle, or only when $\pi/4-\alpha$ is acute?

Published on 16 Apr 2026 - 13:41

score 139 · Answer 2 · 2026-05-10 15:25:48

139

Views

How can we calculate the sum of sines or cosines where the angles are in geometric progression?

Published on 10 May 2026 - 15:25

score 140 · Answer 3 · 2026-04-13 20:07:56

140

Views

Calculate the angle enclosed two lines by means of the scalar product

Published on 13 Apr 2026 - 20:07

score 1k · Answer 4 · 2026-04-11 22:47:49

1k

Views

General equation/function to get angle from x and y coordinates?

Published on 11 Apr 2026 - 22:47

score 369 · Answer 5 · 2026-05-10 16:09:27

369

Views

How significant is the difference between averaging angles and averaging unit vectors?

Published on 10 May 2026 - 16:09

score 1k · Answer 6 · 2026-04-13 19:10:35

1k

Views

Find distance from center of equilateral triangle to edge in given angle

Published on 13 Apr 2026 - 19:10

score 183 · Answer 7 · 2026-04-16 00:33:17

183

Views

find the angle in a triangle with angles $ 20^{\circ}, 70^\circ, 90^\circ $

Published on 16 Apr 2026 - 0:33

score 895 · Answer 8 · 2026-04-18 09:13:56

895

Views

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Published on 18 Apr 2026 - 9:13

score 55 · Answer 9 · 2026-05-11 01:01:12

55

Views

Basic vectors question

Published on 11 May 2026 - 1:01

score 125 · Answer 10 · 2026-05-10 14:03:09

125

Views

Circle Proof Application Calculation Questions

Published on 10 May 2026 - 14:03

score 1.3k · Answer 11 · 2026-04-11 00:26:24

1.3k

Views

Finding angle between 2 vectors using inner product

Published on 11 Apr 2026 - 0:26

score 531 · Answer 12 · 2026-05-10 15:51:43

531

Views

In a unit circle, what allows the same trigonometric rules to be applied past the first quadrant?

Published on 10 May 2026 - 15:51

score 228 · Answer 13 · 2026-04-12 14:34:06

228

Views

For what value on X provides the maximum angle α

Published on 12 Apr 2026 - 14:34

score 40 · Answer 14 · 2026-04-14 15:01:51

40

Views

Shopper shelf view point calculation with webcam algorithm

Published on 14 Apr 2026 - 15:01

score 196 · Answer 15 · 2026-05-10 21:50:10

196

Views

Concurrency (I Think Using Menelaus' Theorem)

Published on 10 May 2026 - 21:50

List Question

Does $\tan\left(\frac{5\pi}{4}-\alpha\right)=\tan\left(\frac{\pi}{4}-\alpha\right)$ hold for any angle, or only when $\pi/4-\alpha$ is acute?

How can we calculate the sum of sines or cosines where the angles are in geometric progression?

Calculate the angle enclosed two lines by means of the scalar product

General equation/function to get angle from x and y coordinates?

How significant is the difference between averaging angles and averaging unit vectors?

Find distance from center of equilateral triangle to edge in given angle

find the angle in a triangle with angles $ 20^{\circ}, 70^\circ, 90^\circ $

Making a regular tetrahedron out of concrete

Basic vectors question

Circle Proof Application Calculation Questions

Finding angle between 2 vectors using inner product

In a unit circle, what allows the same trigonometric rules to be applied past the first quadrant?

For what value on X provides the maximum angle α

Shopper shelf view point calculation with webcam algorithm

Concurrency (I Think Using Menelaus' Theorem)

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