Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
C
Geom. Two Column Proof: If the diagonals of trapezoid ABCD bisect each other, prove
Replies
2
Views
3K
mrarthur
M
M
Finding the apex of an oblique pyramid
Replies
0
Views
1K
mothbox
M
S
Help with circle graph
Replies
6
Views
2K
Sirus
S
M
Fourth grade Geometry: What is the definition of area?
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6
Views
4K
sean
S
T
Geometry: angle DGN is shows Write a proportion that can be used to find DG.
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1
Views
2K
Harry_the_cat
Harry_the_cat
E
Geometry: Rectangle 1 has length x and width y. Rectangle 2 is made by....
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2
Views
3K
stapel
stapel
M
Finding missing base in trapezoid
Replies
9
Views
9K
mmm4444bot
mmm4444bot
B
Prove (1+ sin(x) / cos(x)) = (sin x - cos x +1 ) / ( sin x + cos x + 1)
Replies
1
Views
2K
stapel
stapel
G
Platonic solids' dimensionless pattern
Replies
2
Views
1K
Guatama
G
W
Finding solutions of tan - confused where i went wrong
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3
Views
1K
ksdhart2
K
W
Find the acute angle for a sine angle?
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3
Views
1K
ksdhart2
K
G
Write equation given y-intercept (0,-2) and angle of inclination 120 degrees
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4
Views
3K
Harry_the_cat
Harry_the_cat
M
Vectors - Practical example? "A buoy is being held stable by 3 swimmers...."
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2
Views
3K
mcarthyryan
M
A
Broken plate math problem
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1
Views
3K
aaknutsen
A
N
Trigonomic Functions Help: simplify expressions, using identities
Replies
5
Views
2K
Deleted member 4993
D
A
Triangle similarty
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1
Views
1K
Otis
Otis
R
Touching Circles or spheres problem
Replies
3
Views
2K
rpmwebs
R
H
Volume of Solids Problems
Replies
3
Views
2K
Harry_the_cat
Harry_the_cat
D
Need help with last bit of my equation: f(x)=8*sin(x)+4cos(x)*sin(x) 0<x<2*pi
Replies
4
Views
2K
danishkid
D
D
how to simplify this trigonometric expression without using double angle identities?
Replies
1
Views
2K
ksdhart2
K
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