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Geometry and Trig
Ask your questions about all levels of geometry from elementary school through college.
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Locked
Sticky
Read Before Posting!!
Ted
Feb 20, 2006
Replies
0
Views
31K
Feb 20, 2006
Ted
T
I
Earth curvature help please (My brother-in-law is a flat earther and sent me this video about earth curvature.)
Idun
Mar 21, 2024
2
3
Replies
46
Views
606
Today at 9:36 AM
Dr.Peterson
R
Geometry
reggiwilliams
Yesterday at 8:52 AM
Replies
8
Views
108
Today at 5:56 AM
khansaheb
K
S
Vector equation of a plane given 2 lines
Skelly4444
Yesterday at 9:07 AM
Replies
2
Views
56
Yesterday at 9:59 AM
Dr.Peterson
E
Calculating the area of overlap between 2 circle sectors
evansba
Tuesday at 2:42 PM
Replies
4
Views
125
Wednesday at 9:59 AM
Dr.Peterson
A
Straight line problem: line through (-5,-4) meets x+3y+2=0, 2x+y+4=0, x-y-5=0 at B,C,D respectively. If (15/AB)^2+(10/AC)^2=(6/AD)^2, find line's eqn.
arjunn
Mar 21, 2024
Replies
11
Views
234
Monday at 7:21 PM
khansaheb
K
R
Trigonometry: The diagram shows a rectangle ABCD inside a semicircle, centre O and radius 5cm, such that |<BOA| = |COD| = theta degrees
reggiwilliams
Monday at 9:25 AM
Replies
9
Views
186
Monday at 3:15 PM
The Highlander
A
Volume of triangular prism: The area of a triangular prism is 1/2*base*height*length but why did they add a sin(60)?
annaanna
Saturday at 5:11 PM
Replies
8
Views
204
Sunday at 4:19 AM
annaanna
A
T
A regular polygon is formed by a complex equation’s solutions.
tpupble
Saturday at 9:53 AM
Replies
5
Views
135
Saturday at 12:04 PM
blamocur
R
Co-ordinate Geometry: Verify that 3x - y - 4 = 0 contains pt (2, 2). Hence find shortest distance between line and 6x - 2y + 7 = 0
reggiwilliams
Mar 22, 2024
Replies
3
Views
150
Mar 22, 2024
The Highlander
A
Circle Geometry Question: quadrilateral inscribed in circle; some angle measures given
Aardvqrk
Mar 19, 2024
Replies
2
Views
104
Mar 22, 2024
Dr.Peterson
R
3D projection matrix: Why isn't my 'simple' matrix enough, and what exactly does this real matrix do (better) relative to my matrix?
RMalachi
Mar 22, 2024
Replies
0
Views
25
Mar 22, 2024
RMalachi
R
G
Help with a high school problem involving some analytical geometry and derivation
gacicmia
Mar 20, 2024
Replies
3
Views
110
Mar 21, 2024
The Highlander
B
I'm having trouble with Sum and Difference identity problems like one in the photo and I am unsure of how to go about solving it.
Bluebobber
Mar 20, 2024
Replies
1
Views
80
Mar 20, 2024
Dr.Peterson
A
Please help with this: In triangle XYZ, side y is 8cm, side z is 5cm, and the measure of angle Y is 75 deg; find the length of side x
Andr6173
Mar 16, 2024
Replies
6
Views
204
Mar 20, 2024
Dr.Peterson
N
Please help: On an athletic field, the length of one running track is exactly 400 meters. What is the distance between the front and back lines?
Nahool77
Mar 13, 2024
Replies
2
Views
197
Mar 14, 2024
The Highlander
J
Compartive Pie Chart Question B: Work out the number of packs of vegan sausages that were sold in May 2019
Johnstone
Mar 11, 2024
Replies
1
Views
165
Mar 11, 2024
Dr.Peterson
S
help determining co-ordinates of offset points on a curve: need to find y dimension between flat horizontal and curved profile
Sparky2008
Mar 9, 2024
Replies
1
Views
149
Mar 11, 2024
Dr.Peterson
A
Help w/: How to find height, width and height from sidefaces on box in shape of rectangular prism
atrick
Mar 10, 2024
Replies
2
Views
125
Mar 11, 2024
Dr.Peterson
N
Please help: "The base of the pyramid is a square with a side length of 2√3, and the height of the pyramid is 3cm, with its apex..."
NNikola
Mar 6, 2024
Replies
7
Views
225
Mar 9, 2024
Leonie17
L
Y
Area of plane figures: Find the angle of a sector whose arc length s 22cm and the area is 44cm
yinkus
Mar 5, 2024
Replies
4
Views
185
Mar 6, 2024
The Highlander
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