Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
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2sin^2(x) - 1 = 0: solve for 0 <= x <= 2pi
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1
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13K
royhaas
R
F
[MOVED] Suppose cos(x+y) = 1/4 and cos x cos y = 5/24.
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2
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2K
i'madodo
I
D
Latest Lenny Conundrum (Round 186)
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1
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2K
stapel
stapel
T
2sin^2x - 5sinx + 3 < 0
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1
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7K
skeeter
skeeter
H
image 2
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11
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4K
stapel
stapel
T
1/(secx + tanx) + 1/(secx-tanx) = 2secx
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2
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10K
tdotgirl
T
T
2 sin3x - 1 = 0
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2
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6K
tdotgirl
T
M
Is this identity problem right?
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1
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1K
tkhunny
tkhunny
Y
Confusing Triangle...
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1
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2K
yahooloverofhorses
Y
N
proof and logic: If today is Friday, then today is the last
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1
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1K
Denis
D
T
Displacement of y=4+2sin(4+pi/2)
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5
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3K
Timothy
T
H
IMAGE
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7
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2K
stapel
stapel
T
Law of Sines/Cosines: A hill is inclined 5 degrees to the
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2
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6K
daon
D
K
Trig Story problem: A survey team is trying to estimate the
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1
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14K
arthur ohlsten
A
Y
Measuring Triangles
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1
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1K
stapel
stapel
H
simplify 3 - sqrt2 / 4 + 2 sqrt2
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6
Views
3K
humakhan
H
T
1+sinx/cosx + cosx/1+sinx = 2secx
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4
Views
70K
soroban
S
H
triangle: The median drawn to the hypotenuse of a right tria
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7
Views
4K
soroban
S
S
The measure of one of two complementary angles is six less
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3
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2K
stapel
stapel
K
Three f(x) question: evaluating inverse, finding domain, etc
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2
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2K
killasnake
K
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