Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
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Orthogonal Vectors Problem
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2
Views
548
Dr.Peterson
Dr.Peterson
imk
How to calculate the X,Y index of a cell in a matrix
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2
Views
687
imk
imk
A
Is this obvious? Approximation of pi?
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3
Views
754
apple2357
A
Z
Sinusoidal project
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0
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388
zephyr
Z
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Help with trigonometry Translations
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5
Views
948
mario99
M
?
Two Trigonometry Exercises
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6
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1K
khansaheb
K
T
an optional project from geometry
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3
Views
727
mario99
M
N
List of sas triangle problems
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6
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1K
neilo
N
T
Finding center of a circle given limited infomation
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10
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2K
texasaggie0004
T
S
Trigonometry: P,A,B,C points in plane s.t. <BPA, <CPA are obtuse and on opposite sides of PA
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6
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1K
Stardust1
S
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need to prove formula for height of anti-prism
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2
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596
thxeveryone
T
T
Pls help ASAP how to find the distance from a vertex of a pentagon to its center knowing each side = 1
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2
Views
662
thxeveryone
T
B
Rise of an arc: 8-ft pipe, ends at A, B, center at C, ground is D. How far will C rise from D if...?
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6
Views
1K
Cubist
Cubist
E
Found a sine formula: a sin( (pi(180x + wp))/(180w) )
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6
Views
1K
erikthemathematician
E
R
Force Vectors: In a warehouse a box is being pulled up a ramp that has a 15 degree incline....
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4
Views
1K
The Highlander
The Highlander
D
Stuck on: Choose the appropriate circle for drawing a central angle of 5pi/6.
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1
Views
645
lev888
lev888
A
length of the shorter diagonal, given length of longer diagonal, lengths of sides of parallelogram
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3
Views
1K
The Highlander
The Highlander
A
Polygon with 180 degrees? (polygon has n>5 sides, int. angles form arith. seq., smallest angle 84*, common diff. 4*)
2
Replies
23
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4K
blamocur
blamocur
D
Unsolvable? problem. (with corrected the typo) "How many lines can you draw in a 3D space, which intersect on a single point, and none of them has..."
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7
Views
1K
Duplicity
D
O
parallelogram problem: ABCD-parallelogram, AB is perpendicular to BD, the total perimeter equals 32 cm, BD=8 cm; find area
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1
Views
691
The Highlander
The Highlander
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