Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
J
Tetradecagon - Triangle problem
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2
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2K
jasoncameron
J
K
How can I find the direction vector of l'?
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0
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2K
kvrck
K
H
line x = -1 is side BC of equilateral ABC circumscribing circle x^2 + y^2 = a^2
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4
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3K
helpmeplsinmaths
H
P
Solution of system of trigonometric equations
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6
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2K
Deleted member 4993
D
N
2 opposite angles in a quadrilateral are congruent. Is it a parallelogram?
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2
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2K
Newt
N
D
Why does this proportion work?
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1
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1K
pka
pka
A
Double Angles-Not sure how to start problem
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1
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2K
Deleted member 4993
D
N
real world application of sinusoidal functions
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1
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3K
Deleted member 4993
D
B
sine cos and tan waves
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1
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1K
stapel
stapel
K
Trig Identities: csc^4(x)-2csc^2(x)+1=cot^4(x)
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4
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4K
Deleted member 4993
D
N
Geometry Winter Packet Help: Donald want to build a fence....
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3
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4K
Deleted member 4993
D
F
Find all the solutions between -2pi and 2pi of the equation - cos(theta)=-(1/sqrt2)
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2
Views
2K
Feeder24
F
C
Finding the value of Sin (pi/12)
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2
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7K
Prove It
P
S
Determinant of 4 x 4 matrix
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8
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3K
__SB
S
S
Cramer's rule
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4
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2K
__SB
S
B
Put the complex solutions of an equation under polar form
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12
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3K
Prove It
P
J
Calculate triangle in circle
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1
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2K
Deleted member 4993
D
L
Trigonometric Sum: cos(2pi/28)*csc(3pi/28) + cos(6pi/28)*csc(9pi/28) + cos(18pi/28)*
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1
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2K
Ishuda
I
G
Need Help Triangulating a point in 2D space
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6
Views
4K
Ishuda
I
K
need help to find the height of given sum
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5
Views
2K
Deleted member 4993
D
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