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Geometry and Trig
Ask your questions about all levels of geometry from elementary school through college.
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Mathematical Prison Escape: Create challenge where prisoner has to use geo/trig to escape
bob thompson
Nov 26, 2023
2
Replies
25
Views
1K
Jan 17, 2024
bob thompson
J
The packing problem: What is the methodology for finding how many small spheres (radius r) can fit in a large sphere (radius R)?
jack123
Jan 16, 2024
Replies
1
Views
177
Jan 16, 2024
Dr.Peterson
Need help with a triangle similarity problem: Triangle CBD is inscribed in a circle. From point D, a tangent line is drawn...
rocketFrog
Jan 16, 2024
Replies
1
Views
167
Jan 16, 2024
Dr.Peterson
V
right scalene triangle problem with two right triangles in it help
Vol
Jan 14, 2024
Replies
7
Views
294
Jan 14, 2024
khansaheb
K
R
Circle over a rectangle - radius needed (opening is 60" vertical x 25" horizontal; strut is 2.5" wide)
rich_a
Jan 12, 2024
Replies
4
Views
225
Jan 13, 2024
Dr.Peterson
D
Semicircle Right Angled Trig: In the diagram, O is the centre of semicircle ACB, and...
duccaroni
Jan 12, 2024
Replies
3
Views
249
Jan 13, 2024
The Highlander
S
Vectors question: Prove that XYZ is a straight line
shuphie
Dec 29, 2023
Replies
3
Views
332
Jan 9, 2024
blamocur
S
Vectors question: OACB is a trapezium whose diagonals, OC and AB, intersect at P.
shuphie
Dec 28, 2023
Replies
3
Views
644
Jan 9, 2024
blamocur
S
Length of ladder: A ladder leans against a wall with its base 15 ft from it. When the ladder is pulled 5 ft further from the wall...
sweet$
Jan 5, 2024
Replies
4
Views
282
Jan 9, 2024
The Highlander
L
The third harmonic of a wave motion is given by:4.3cos3θ-6.9sin3θ. express this in the form R sin(3θ±α) .
lbar
Jan 5, 2024
Replies
3
Views
228
Jan 9, 2024
The Highlander
N
I need help: "Calculate the perimeter of the composite figure"
Nauman
Jan 5, 2024
Replies
7
Views
445
Jan 5, 2024
Nauman
N
R
Graphing a weird shape (based on the block game minecraft)
rockiter24
Jan 4, 2024
Replies
2
Views
217
Jan 4, 2024
Dr.Peterson
J
Intersection of tangent line with circle
jonnburton
Dec 29, 2023
Replies
5
Views
274
Dec 31, 2023
jonnburton
J
S
Vectors question: ABCDEF is a regular hexagon with centre O. M is the midpoint of BC. X is on AB extended, such that....
shuphie
Dec 28, 2023
Replies
1
Views
288
Dec 30, 2023
Dr.Peterson
M
Questions about the union of these sets?
Mates
Dec 16, 2023
2
3
4
Replies
61
Views
2K
Dec 28, 2023
pka
S
Vectors question: is the mark scheme wrong?
shuphie
Dec 28, 2023
Replies
2
Views
250
Dec 28, 2023
shuphie
S
R
Need help to find point E so that area of X equals area of Y.
rva
Dec 22, 2023
Replies
2
Views
188
Dec 24, 2023
Dr.Peterson
A
Errara Humanum Est
Agent Smith
Dec 23, 2023
Replies
10
Views
309
Dec 24, 2023
Agent Smith
A
A
Inverse Trig Problem: Prove arcsin(1/x) = -arccos((sqrt{x^2 - 1})/x)
apple2357
Dec 21, 2023
Replies
7
Views
362
Dec 22, 2023
Dr.Peterson
W
Circles' intersection area is π/2, smaller circle's radius is 1; larger circle's radius=?
Wikh
Dec 12, 2023
Replies
12
Views
505
Dec 16, 2023
khansaheb
K
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