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Geometry and Trig
Ask your questions about all levels of geometry from elementary school through college.
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HELP Solving Trigonometric Equation sin^2 theta cos^2 theta=0
exploding_butterfly
Oct 25, 2016
Replies
3
Views
1K
Oct 25, 2016
HallsofIvy
H
T
Geometry (law of sines)
Tarrok
Oct 24, 2016
Replies
1
Views
634
Oct 25, 2016
Deleted member 4993
D
U
Geometry: Distance of the centre of the circle
ushay
Oct 24, 2016
Replies
0
Views
801
Oct 24, 2016
ushay
U
L
Help calculating 2 areas
Larkula
Oct 22, 2016
Replies
4
Views
3K
Oct 23, 2016
Steven G
M
cos(x)+sin(-3x)=0 - Doubt in a particular step
Mathallica
Oct 11, 2016
Replies
2
Views
879
Oct 23, 2016
Mathallica
M
H
solve sin2x - 1 = cos2x where x is between 0 and 360
hndalama
Oct 23, 2016
Replies
4
Views
9K
Oct 23, 2016
hndalama
H
T
cone has height twice its radius, volume of 18pi in^3; find cone's height in inches
tathagata7
Oct 22, 2016
Replies
3
Views
4K
Oct 23, 2016
tathagata7
T
D
Simple trigonometric problem: If tan(x) - cot(x) = 2√3, what is their sum?
DarkRose
Oct 23, 2016
Replies
4
Views
6K
Oct 23, 2016
stapel
C
Unit square and the pigeonhole principle
CupcakeFury
Oct 20, 2016
Replies
1
Views
3K
Oct 21, 2016
stapel
G
Simplify cos^4(x)-sin^4(x)=sqrt(3)sin(2x) and solve on the interval [0,pi)
goat
Oct 20, 2016
Replies
3
Views
1K
Oct 21, 2016
Bob Brown MSEE
B
B
Curve of equidistant points on a plane
borginz
Oct 19, 2016
Replies
6
Views
2K
Oct 19, 2016
Deleted member 4993
D
H
Prove that arcsin(1/2) + arcsin(1/3) = arcsin( (2√2+√3)/6 )
hndalama
Oct 18, 2016
Replies
5
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4K
Oct 19, 2016
hndalama
H
P
Help with a Distance problem.
Pat Cronin
Oct 12, 2016
Replies
2
Views
2K
Oct 18, 2016
ptcesq
P
T
Calculating lengths from Engineering Drawing
Thumpasaurus
Oct 17, 2016
Replies
2
Views
2K
Oct 17, 2016
Thumpasaurus
T
N
Help with Proofs and Theorems
NamiNuitsuki
Oct 13, 2016
Replies
14
Views
4K
Oct 17, 2016
NamiNuitsuki
N
P
Find equations of common tangents to parabola y^2=15x, circle x^2+y^2=16
phil89
Oct 16, 2016
Replies
1
Views
2K
Oct 17, 2016
stapel
C
Geometry: A single LED bulb illuminates light from a single point in all directions.
CigmaChi
Oct 16, 2016
Replies
1
Views
2K
Oct 17, 2016
stapel
H
Prove this identity: sin^2(x + 45) + cos^2(x - 45)
hndalama
Oct 16, 2016
Replies
4
Views
4K
Oct 17, 2016
hndalama
H
T
Find unknown angles of a triangle!!!
tantrik
Oct 14, 2016
Replies
3
Views
2K
Oct 15, 2016
Otis
N
Inverse Trignometry: if x1,x2,x3,x4 are roots of eqn, then find sum of tan^-1 x
namitha
Oct 15, 2016
Replies
2
Views
3K
Oct 15, 2016
stapel
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