Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
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Showing Tan(2x) in exponential form
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2
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5K
Ishuda
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Solving for Double Angles
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1
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2K
stapel
stapel
S
Cosine Rule question
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1
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2K
Deleted member 4993
D
R
Number of dual triangles in a 4x4 grid
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0
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1K
Ravncat
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J
Assistance Needed
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1
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1K
Deleted member 4993
D
T
Calculating possible angles of triangle (difficult?)
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2
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1K
Ishuda
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S
Find the length of a side?
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8
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4K
sacred
S
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i need help about properties of arc
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2
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1K
invisun
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D
Trouble proving identity: [ sin^3(x) + sin(x)cos^2(x) ] / cos(x) = tan(x)
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1
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1K
stapel
stapel
D
i am having a very difficult time understanding my math homework im on the last page
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1
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1K
stapel
stapel
G
circles, arc and area. please help T.T
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3
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2K
gd439
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R
Trig Identity Questins
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2
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2K
radharcnacille
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S
Calculate The Area
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2
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1K
smithdiya
S
B
Analysis of Apollonius Prop. 108 and a question on notation
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0
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1K
bphil
B
I
I need help
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1
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1K
stapel
stapel
A
Relationship between a truncated tetrahedron and its enclosed tetrahedron
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0
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892
andrewvecsey
A
J
Triangle angles fun
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2
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1K
Jakopos
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S
find the period of these functions
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1
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2K
Deleted member 4993
D
S
f(x)={x} where {x}=x-[x] is periodic.
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1
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1K
Deleted member 4993
D
E
2 High School Construction Problems
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2
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1K
engineerfeelingstupid
E
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