Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
P
8th grade trigonometry question
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4
Views
614
MarkFL
MarkFL
M
Error in a proof for the area of the circle?
2
Replies
22
Views
3K
MegaMoh
M
F
Triangles proportions
Replies
6
Views
1K
ksdhart2
K
L
|sin a|<=|a|
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11
Views
841
Harry_the_cat
Harry_the_cat
O
Theorems Involving Points, Lines and Planes
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4
Views
692
onesun0000
O
Z
don't understand matrix
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2
Views
679
zentech
Z
S
Geometry - triangle problems
Replies
6
Views
1K
Dr.Peterson
Dr.Peterson
J
Need help on two practice problems
Replies
4
Views
833
Dr.Peterson
Dr.Peterson
K
trig
Replies
2
Views
712
Deleted member 4993
D
C
Period Sinusx
Replies
6
Views
957
Dr.Peterson
Dr.Peterson
G
Formula for Angle Range of Equal Circles Colliding?
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17
Views
2K
LCKurtz
LCKurtz
W
Designate the old point coordinates (having the new one) after translation and rotation
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6
Views
2K
Dr.Peterson
Dr.Peterson
P
Popcorn Container
Replies
1
Views
805
Denis
D
P
Please help me solve this question about circles (sectors).
Replies
2
Views
555
MarkFL
MarkFL
M
Proving identities: (tanA sinA)/(1 - cosA) = 1 + (1/cosA)
Replies
3
Views
1K
JeffM
J
D
Help working with two points of a circle
Replies
4
Views
731
pka
pka
N
Trig help
Replies
2
Views
562
Netzer7
N
R
Points on a Lattice
Replies
7
Views
3K
rahuls
R
C
sinx derivative & integrate
Replies
2
Views
458
curicuri
C
C
Understanding unit vectors
Replies
9
Views
2K
Clydey
C
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