Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
B
Identity Problem: 1 + cos ^2 x = 1 + sec ^2 x / 1 + tan ^2 x
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3
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1K
stapel
stapel
B
Verify identity and solve: 1 - sin (-u) / cos u + cos (-u) / 1 + sin = 2 sec u
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1
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1K
stapel
stapel
T
Proving that straight line divides the angle into two equal parts
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1
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2K
Deleted member 4993
D
M
All the three sides of triangle ABC have lengths in integral units, with AB = ...
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7
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4K
mtpnd98
M
L
I need help filling in two-column proof
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4
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2K
pka
pka
Z
Cant find angle
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4
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2K
Deleted member 4993
D
T
Need help solving some trig identities
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2
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1K
Deleted member 4993
D
A
A building inspector is checking a building height restriction....
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2
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1K
Deleted member 4993
D
Emerald123
Calculating expressions using sin of radians
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4
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2K
Emerald123
Emerald123
B
Perimeter Question
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3
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1K
stapel
stapel
M
Solving Trig Equation tan^2x - 5tanx + 5 = 0 on (0, 2pi)
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3
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4K
Deleted member 4993
D
V
Solving Trig Equation: 6cosx + cos2x = 2sin^2(x) - 5 for 0<=x<=pi
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4
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2K
Vulcan
V
M
Solving Trig Equation secx + cosx = tanx sinx - 1
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4
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4K
Deleted member 4993
D
S
Apothem and radius problems
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0
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1K
SomeoneYouDontKnow
S
V
Plane Separation Postulate Proof
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1
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2K
stapel
stapel
M
Application Question: 50km/h wind blowing due east blows the aircraft off course.
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2
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2K
Haymedoots
H
H
Taxicab Geometry
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3
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1K
Deleted member 4993
D
B
A straight line? Without being given any more information, can I conclude...?
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3
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2K
ksdhart
K
S
Calculate the area of the floor
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7
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3K
Haymedoots
H
K
(Sin^3)/cos??????
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7
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2K
Ishuda
I
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