Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
B
Determine the angle between the Y-axis and an angle bisector.
Replies
0
Views
361
bogo
B
J
projection in a right-angled triangle
Replies
1
Views
662
khansaheb
K
M
theorems about the circle
Replies
0
Views
466
miraclezz
M
I
  • Locked
Earth curvature help please (My brother-in-law is a flat earther and sent me this video about earth curvature.)
2 3
Replies
57
Views
8K
Idun
I
R
Geometry
Replies
9
Views
2K
The Highlander
The Highlander
S
Vector equation of a plane
Replies
3
Views
825
blamocur
blamocur
S
Vector equation of a plane given 2 lines
Replies
2
Views
754
Dr.Peterson
Dr.Peterson
E
Calculating the area of overlap between 2 circle sectors
Replies
4
Views
1K
Dr.Peterson
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.
Replies
11
Views
1K
khansaheb
K
R
Trigonometry: The diagram shows a rectangle ABCD inside a semicircle, centre O and radius 5cm, such that |<BOA| = |COD| = theta degrees
Replies
9
Views
2K
The Highlander
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)?
Replies
8
Views
2K
annaanna
A
T
A regular polygon is formed by a complex equation’s solutions.
Replies
5
Views
1K
blamocur
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
Replies
3
Views
917
The Highlander
The Highlander
A
Circle Geometry Question: quadrilateral inscribed in circle; some angle measures given
Replies
2
Views
728
Dr.Peterson
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?
Replies
0
Views
547
RMalachi
R
G
Help with a high school problem involving some analytical geometry and derivation
Replies
3
Views
847
The Highlander
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.
Replies
1
Views
586
Dr.Peterson
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
Replies
6
Views
1K
Dr.Peterson
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?
Replies
2
Views
789
The Highlander
The Highlander
J
Compartive Pie Chart Question B: Work out the number of packs of vegan sausages that were sold in May 2019
Replies
1
Views
658
Dr.Peterson
Dr.Peterson
You must log in or register to post here.
Top