Question

What is the height of the tower given following information?

score 1.3k · Answer 1 · 2021-05-16 05:43:18

1.3k

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What is the height of the tower given following information?

Published on 16 May 2021 - 5:43

score 66 · Answer 2 · 2021-05-16 18:18:58

66

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Given a $k^2$-membered set $S$ of points with coordinates $(x,y)\in \{ 1,2,...,k \}$, prove that some $4$ points in $S'$ lie on a circle.

Published on 16 May 2021 - 18:18

score 826 · Answer 3 · 2026-04-01 12:24:51

826

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Find the projection of the straight line $(x-1)/2 = (y-1)/3 = (z+1)/-1$ on the plane $x+y+2z = 6$.

Published on 01 Apr 2026 - 12:24

score 119 · Answer 4 · 2026-03-31 03:33:46

119

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Why does a circle project its shadow as an upside down heart shape onto a corner instead of as an ellipse?

Published on 31 Mar 2026 - 3:33

score 290 · Answer 5 · 2021-05-21 01:56:00

290

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Geometric proof or interpretation of the triple tangent and cotangent identities

Published on 21 May 2021 - 1:56

score 180 · Answer 6 · 2021-05-23 11:15:26

180

Views

Angle of triangle

Published on 23 May 2021 - 11:15

score 260 · Answer 7 · 2021-05-24 18:34:06

260

Views

Equations for three points on a fixed plane

Published on 24 May 2021 - 18:34

score 53 · Answer 8 · 2021-05-25 06:35:33

53

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how to find this angle inside a quadrilateral

Published on 25 May 2021 - 6:35

score 103 · Answer 9 · 2021-05-26 14:13:00

103

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Finding center of a sphere given a line and a plane

Published on 26 May 2021 - 14:13

score 1.3k · Answer 10 · 2021-05-29 02:31:03

1.3k

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What is the length of side AB of the triangle?

Published on 29 May 2021 - 2:31

score 4.4k · Answer 11 · 2021-05-29 06:34:51

4.4k

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What is the height of each flagstaff in meter?

Published on 29 May 2021 - 6:34

score 128 · Answer 12 · 2026-03-25 15:45:38

128

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Barycentric coordinates.

Published on 25 Mar 2026 - 15:45

score 69 · Answer 13 · 2021-06-03 12:19:36

69

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circle around a (irreducible) conic section

Published on 03 Jun 2021 - 12:19

score 19 · Answer 14 · 2026-03-24 17:31:19

19

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Find the point of intersection of line $r=(3,7,1)+n(0,2,4)$ with the plane containing only $x-axis$ and $z-axis$.

Published on 24 Mar 2026 - 17:31

score 263 · Answer 15 · 2021-06-08 04:30:08

263

Views

The Planes $P_1$ and $P_2$ intersect in the line $L_3$, which has direction $q=(1,a,b)$

Published on 08 Jun 2021 - 4:30

List Question

What is the height of the tower given following information?

Given a $k^2$-membered set $S$ of points with coordinates $(x,y)\in \{ 1,2,...,k \}$, prove that some $4$ points in $S'$ lie on a circle.

Find the projection of the straight line $(x-1)/2 = (y-1)/3 = (z+1)/-1$ on the plane $x+y+2z = 6$.

Why does a circle project its shadow as an upside down heart shape onto a corner instead of as an ellipse?

Geometric proof or interpretation of the triple tangent and cotangent identities

Angle of triangle

Equations for three points on a fixed plane

how to find this angle inside a quadrilateral

Finding center of a sphere given a line and a plane

What is the length of side AB of the triangle?

What is the height of each flagstaff in meter?

Barycentric coordinates.

circle around a (irreducible) conic section

Find the point of intersection of line $r=(3,7,1)+n(0,2,4)$ with the plane containing only $x-axis$ and $z-axis$.

The Planes $P_1$ and $P_2$ intersect in the line $L_3$, which has direction $q=(1,a,b)$

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