Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
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Proving equations using sin, cos and tan: (1+tanx)/(sinx+cosx) = 1/cosx
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4
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1K
Deleted member 4993
D
L
Trigonometria: The pendulum of a grandfather clock consists of a circular disc....
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2
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2K
stapel
stapel
N
Dividing a Trapezoid horizontally in 2 equal parts
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0
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3K
noznoz159
N
A
2d game geometry
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4
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1K
andrewjb123
A
B
Problem involving cos + sin: express 5cos(3t) + 12sin(3t) as "A cos(wt + a)"
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2
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1K
HallsofIvy
H
M
summ of trig functions (how to and where)
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1
Views
856
Deleted member 4993
D
B
Problem involving double cosine: 3cos(2θ) = -1.6 0 ≤ θ ≤ π
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1
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875
pka
pka
M
Math without zero?
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2
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3K
Michaelsrk
M
I
Determine the area and the height of the triangle
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3
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2K
ksdhart2
K
M
Geometry, Analytic Geometry, Line equations
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4
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2K
lookagain
L
N
Planar Geometry: Prove that the lines CX and AY are concurrent and...
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1
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1K
Harry_the_cat
Harry_the_cat
S
Logic problem: True or False? If n^2 = 4, then n=-2.
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4
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2K
Otis
Otis
B
Surface Area of Right circular cone with only radius
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2
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2K
Otis
Otis
J
trigonometry, trigonometric identities, hyperbolic functions
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3
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2K
ksdhart2
K
B
tan(x)*sin(x)=tan(x)=cos(x), help solve equation!
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2
Views
1K
Deleted member 4993
D
L
Prove that sin(θ) + cos(θ)cot(θ)
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2
Views
1K
Harry_the_cat
Harry_the_cat
S
Vector Geometry question
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1
Views
2K
Deleted member 4993
D
H
Vector Equation Line: lasers and targets
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2
Views
1K
helloWorld600
H
G
Calculating internal angles and bearing of triangle
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5
Views
3K
Deleted member 4993
D
E
congruence of triangles: In triangles ABC and DEG we are given that AB=DE and AC=DG
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5
Views
2K
egyrak
E
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