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Geometry and Trig
Ask your questions about all levels of geometry from elementary school through college.
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Surface Area of Rectangular Prism is sum of areas of 6 rectangles that form the prism
openyourminds
Nov 10, 2016
Replies
2
Views
1K
Nov 17, 2016
openyourminds
O
O
GED Triangle Geometry Question
openyourminds
Nov 10, 2016
Replies
5
Views
2K
Nov 17, 2016
pka
R
Grid Problem
Rupan
Nov 16, 2016
Replies
1
Views
792
Nov 17, 2016
Otis
S
Trigonometric identities: 4cot²(x) - 6 cosec (x) = -6
Simongreen93
Nov 15, 2016
Replies
5
Views
5K
Nov 16, 2016
Steven G
P
Nine-Point Circle
pholee95
Nov 15, 2016
Replies
1
Views
862
Nov 15, 2016
ksdhart2
K
S
Trig Word Problem: Aeroplane flying at 10000 m is directly overhead.
Sarie
Nov 15, 2016
Replies
2
Views
2K
Nov 15, 2016
Otis
H
Solve trigonometry equations
hoosie
Nov 14, 2016
Replies
1
Views
1K
Nov 15, 2016
Otis
H
Use the fact that 36 = 120 -84 to find the exact value of x
hndalama
Nov 2, 2016
Replies
4
Views
2K
Nov 14, 2016
hoosie
H
J
(1+cosx)/sinx=cot(x/2): I just need help with the first two lines.
jonokonko
Nov 11, 2016
Replies
3
Views
1K
Nov 14, 2016
hoosie
H
Y
If sine θ is a function, why does it not have parentheses?
yj1214
Nov 13, 2016
Replies
6
Views
8K
Nov 13, 2016
Steven G
F
Graphing Cosine Function: y=cos2πx
FritoTaco
Nov 11, 2016
Replies
8
Views
4K
Nov 13, 2016
stapel
N
Volume calculation of 4 superimposing spheres
nanofreak
Nov 12, 2016
Replies
1
Views
1K
Nov 12, 2016
nanofreak
N
H
solve the equation sec(2x)cos(6x) + 1 = 0
hndalama
Nov 10, 2016
Replies
6
Views
2K
Nov 11, 2016
hndalama
H
S
Please help w/ 3sinx = 2,1; 2 + sinx = 0; cos^3x=0,512; cos^2x - 3sin^2x=0; cos^2x +
SummerLove
Nov 9, 2016
Replies
1
Views
887
Nov 9, 2016
stapel
T
Need a hint with a geometry problem (ABC is isosceles; find MH_3)
Tarrok
Nov 4, 2016
Replies
3
Views
2K
Nov 9, 2016
hoosie
H
H
Matrices
HugeLag
Nov 7, 2016
Replies
1
Views
912
Nov 8, 2016
stapel
K
Congruent Triangle Proofs
Katerina
Nov 7, 2016
Replies
3
Views
1K
Nov 7, 2016
HallsofIvy
H
H
3D Triangles (VERTICES), and Vectors (Help)
HugeLag
Nov 6, 2016
Replies
5
Views
1K
Nov 6, 2016
pka
M
Rose Curve Proof
Mathsgla
Nov 3, 2016
Replies
8
Views
2K
Nov 6, 2016
Steven G
V
Adding waves of the same frequency! If I have v_1 = 3sin t and v_2 = 2cos t...
Vulcan
Nov 3, 2016
Replies
2
Views
1K
Nov 4, 2016
Vulcan
V
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