Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
Z
Help finding missing endpoint if E is the midpoint of DF. F(5, 8) , E(4, 3)
Replies
3
Views
46K
stapel
stapel
V
Proving that 3 points are collinear
Replies
1
Views
2K
stapel
stapel
T
Proving Trigonometric Identities: 2cotx cscx - 1/1-cosx - 1/1+cosx
Replies
3
Views
3K
stapel
stapel
E
Transitive properties and two column proofs
Replies
1
Views
996
stapel
stapel
S
How to figure out new height when I size up width and length?
Replies
1
Views
889
Harry_the_cat
Harry_the_cat
B
equation of a square; need equation similar to eqn for circle
Replies
1
Views
3K
lookagain
L
T
Multiply the Numerator and denominator by a common expression: *cos^2/1 - sinx, etc.
Replies
2
Views
1K
thebeanstalk
T
I
Can someone explain how to use trig and solve this? "In triangle ABC, ∠ABC = 90◦...."
Replies
2
Views
2K
Otis
Otis
J
2 Unit Circles on a Coordinate Plane
Replies
5
Views
2K
pka
pka
J
Testing thread creation
Replies
0
Views
746
Jetstreak
J
R
Understanding Cross Product
Replies
2
Views
1K
RedSquirrel
R
S
I have to start a class looking at a topic involving set of numbers .
Replies
0
Views
733
Sail_bad
S
N
Finding the circumference of a triangle with given base and height?
Replies
4
Views
4K
Deleted member 4993
D
E
overlapping circles
Replies
2
Views
1K
[email protected]
E
J
I can't follow this simplification: arccos(z sqrt[x^2+y^2+z^2]/sqrt[(x^2+z^2)(y^2+z^2
Replies
6
Views
3K
pka
pka
S
Segments and arcs inscribed in circles
Replies
2
Views
1K
Sen118
S
D
Trigonometry Prob: James (standing at D) kicks a ball towards Bob (standing at P).
Replies
0
Views
705
dfkdsjfsdlk
D
U
The sum of three segments are 58 inches...
Replies
1
Views
1K
Deleted member 4993
D
P
Calculate rectangle vertices
Replies
3
Views
2K
Otis
Otis
M
Surface area of a giant cup
Replies
6
Views
3K
stapel
stapel
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