Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
M
Intersection point of line and polygon in 3d space
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9
Views
2K
mmm4444bot
mmm4444bot
T
Determining the numbers sides a regular polygon with has
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3
Views
1K
Dr.Peterson
Dr.Peterson
K
area of triangle given angle bisector
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2
Views
965
mmm4444bot
mmm4444bot
A
2D Analytical Geometry: Escalator Problem
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1
Views
886
Dr.Peterson
Dr.Peterson
T
Simple Trig Proof: prove that sin^4θ-cos^4θ=1-2cos^2θ.
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3
Views
1K
Dr.Peterson
Dr.Peterson
M
Proof for Double Angle Formulae in a diagram
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5
Views
1K
Harry_the_cat
Harry_the_cat
K
triangle length vs angles: from phytagoras, AC = 25/3 and AD = 7/3 considring AB = AC
Replies
9
Views
2K
sinx
S
W
Need help w/ triangles UWV, EDF: have to find value of "b"
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2
Views
2K
Dr.Peterson
Dr.Peterson
K
finding angle alpha in quadrilateral ABCD (please see picture)
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9
Views
2K
Dr.Peterson
Dr.Peterson
M
Real World Lifting Problem: path of 4000mm cable
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3
Views
935
mmilez912
M
T
Find x where sin(x) gives the same result when expressed in radians or degrees.
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2
Views
781
Bob Brown MSEE
B
A
Help! Finding a set of percentages based on bisecting a cylinder?
Replies
3
Views
861
agibberjabber
A
K
distance on diagonal of equal sides parallelogram: DF = 2 cm BE = 4 cm find AC
Replies
2
Views
882
Dr.Peterson
Dr.Peterson
B
true/false question: If f is odd, with period p, then ​f(-t + 2p) = f(t).
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1
Views
3K
pka
pka
S
Finding the coordinates of triangle vertices given midsegment
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3
Views
1K
Deleted member 4993
D
I
Skyscraper: difference in width of base, top floor, using plumb lines & Earth's diam.
Replies
7
Views
2K
stapel
stapel
O
Factor of safety in operation: angles, bolts, tensile strength
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2
Views
4K
Beasty729
B
shahar
symetric line: Is the line in the picture is line of Symmetry of Rectangle?
Replies
3
Views
1K
Dr.Peterson
Dr.Peterson
L
iGCSE: A,B,D,E on circle centered at O; AFBC,OEC,OFD are straight lines
Replies
1
Views
4K
Dr.Peterson
Dr.Peterson
K
Rise over Run: building ramps to fit truck into garage of same length
Replies
4
Views
6K
Dr.Peterson
Dr.Peterson
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