Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
C
larger of 2 supplementary angles exceeds 7 x's smaller by 4
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2
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2K
curt l.
C
M
quick question: is '[Cos(3x)]^2+[sin(3x)]^2=1' true?
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3
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5K
Denis
D
J
How do you solve proofs?
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5
Views
3K
stapel
stapel
S
Help! Im stuck! 4sin^2x + 2cos^2x = 3, 2cosx - 3tanx = 0
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2
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10K
stellarluv
S
F
Word problem: A plane is headed N 40° E with a speed of 600
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4
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8K
Faded-Maximus
F
V
trig probs: sin(x)- 2sin^2(x)= 0, sinx= cos2x, tanx + secx =
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1
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2K
skeeter
skeeter
V
[MOVED] trig review prob.: cos (x) * sin (x) - sin (x) = 0
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6
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2K
skeeter
skeeter
V
[MOVED] trig review: 2sin^2 (x) - 5sin (x) + 2
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7
Views
3K
skeeter
skeeter
K
The velocity of New York in space (due to rotation)
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2
Views
4K
Kanimoto
K
M
degrees of latitude / area of slice of pizza / angular veloc
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2
Views
2K
Misslovey23
M
S
A tangent is drawn from P to a circle with centre O
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2
Views
2K
seek_solutions
S
N
Perpendicular intersect
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3
Views
2K
jonboy
J
F
geometry problem: find the lengths of DB, AE, and DE
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9
Views
4K
galactus
G
L
Few Trig Q's: prove sec^2(x) = 1 + tan^2(x), etc.
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1
Views
3K
royhaas
R
M
Pleas help me with this puzzle (circles placed in grid)
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1
Views
2K
tkhunny
tkhunny
N
trig: find (theta) if sin (theta)=-.3030 and (theta) is in Q
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1
Views
2K
tkhunny
tkhunny
L
[MOVED] solve tan(x) + sec(x) = sqrt[3] on [0, 2pi]
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2
Views
6K
stapel
stapel
H
odd integers: find three consecutive odd integers such that
Replies
12
Views
5K
jonboy
J
R
[SPLIT] Five times the complement of an angle less
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2
Views
3K
RoseOfStone241
R
H
perimeter and variables
Replies
1
Views
2K
galactus
G
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