Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
O
Trigonometry Identity Prob: Verify (tan^2x+1)(cos^2(-x)-1)=-tan^2x
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2
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4K
hoosie
H
J
Proof: line that divides both bases of trapezoid in half
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0
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1K
Johulus
J
0
Prove why a company logo which comprises of an isosceles triangle inscribed within a
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1
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1K
stapel
stapel
N
rewrite (sin(2x)^2 in terms of cos(x)
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7
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7K
hoosie
H
N
Trigonometry Help: Surveyor needs to determine height of building. She measures...
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5
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7K
njbeep
N
N
Trigonometric graph: finding "b" in y = a*sin(bx) + c from graph
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1
Views
987
stapel
stapel
O
Compute height of the Empire State Building
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2
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3K
olusiart
O
G
House surface area: Ralph is painting the barn, including the sides and roof....
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1
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5K
Harry_the_cat
Harry_the_cat
P
My ellipse for loop calculates the ellipse to small
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0
Views
1K
Pat512
P
O
Trig Identity Proof: a cos(t) + b sin(t) = sqrt{a^2+b^2} sin(t) + arctan(a/b)
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4
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2K
Deleted member 4993
D
M
Reference system change (theory, not exercise solution)
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1
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2K
Ishuda
I
H
describe the meaning and concept of cohomology in a visual non technical tongue?
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1
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1K
Ishuda
I
M
Geometry, Trig, Calculus . . . not sure
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1
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1K
stapel
stapel
F
Regarding n points placed within a circle, and point Q on the periphery.
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3
Views
3K
frusciante
F
A
Where two line segments intersect?
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3
Views
2K
Johulus
J
T
how to find the apothem of a pentagon from the sum of the apothem and radius
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1
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2K
Thunderbird
T
T
Geometry: Straight line 21 inches long, required to some formula to make this line a
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4
Views
2K
Harry_the_cat
Harry_the_cat
A
Bearings: A radar station picks up a distress call from a ship. It is 50km away on a
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2
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3K
adi9891
A
D
Binominal Series: expand in ascending powers of X as far as x3: 1/sqrt{4+x}
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3
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3K
Daz
D
B
Ground speed/ air speed help
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5
Views
1K
stapel
stapel
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