Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
F
How do i solve this? Circle w/ center O, points B, C on circumference, B, C, O not collinear
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18
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2K
Dr.Peterson
Dr.Peterson
N
Analytic geometry: Circle w/ center in QI touches x-axis at (3,0), line 3x-4y+36=0
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2
Views
865
limiTS
L
C
Find the height of the building ("Fig. 17.13 shows a boy sitting on a platform 7.5m high...")
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2
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2K
chijioke
C
L
Please help with geometry homework (prisms)
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5
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2K
The Highlander
The Highlander
C
How to define the height of some triangles
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11
Views
4K
Dr.Peterson
Dr.Peterson
I
Volume of sand of a slope inside a circle
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2
Views
1K
Dr.Peterson
Dr.Peterson
A
Intersection of two known triangles: planet Mercury and Egyptian pyramid
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4
Views
2K
Ahatmose
A
U
Cyclic Quad: How to prove the figure in the graphic is a cyclic quadrilateral?
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9
Views
2K
urimagic
U
C
How many kilograms of sugar will the bigger one hold?
2
Replies
31
Views
5K
The Highlander
The Highlander
M
Finding the Angle
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4
Views
1K
Moonglum
M
S
Calculating intersection of arc and line
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2
Views
898
SpencerW
S
O
Two-Column Proof: Given: Segment AB=x+16, Segment BC=4x+11, Segment AC=77; Prove: AB=26
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2
Views
1K
blamocur
blamocur
R
Medieval Pierced Panel Geometry Problem. (create a model from just outer radius)
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6
Views
1K
Rob Edwards
R
C
How many litres of paraffin will a similar drum 30 cm high hold?
2
Replies
20
Views
3K
The Highlander
The Highlander
Harry_the_cat
tangent question: What is value of 1/tan(pi*x) when x = 1/2? Is it 0?
Replies
16
Views
3K
Dr.Peterson
Dr.Peterson
U
First quadrant? They give sqrt{13}*sin(x) + 3 = 0, where 0 degrees < x < 90 degrees
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5
Views
1K
urimagic
U
B
How to draw a plane intersecting a cylinder at a "compound angle"
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0
Views
541
Bor
B
C
How do I find the area of this parallelogram? (lateral side 9cm, bases 12cm, angle 73*)
2
Replies
31
Views
6K
Steven G
Steven G
U
Manipulation: How does [3p (sqrtl{2}/2) (cos(x) + sin(x))] / sin(x) become [3p (cos(x) + sin(x))] / [sqrt{2} sin(x)] ?
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2
Views
784
urimagic
U
A
Finding a radius to a line with two known points
Replies
5
Views
1K
Ahatmose
A
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