Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
H
prove this identity: sin(3x) + sin(x) = 2sin(2x)cos(x)
Replies
5
Views
6K
Ishuda
I
I
Equilateral triangle: find distance from corners to center of mass
Replies
1
Views
2K
Harry_the_cat
Harry_the_cat
A
edge-on views of plane and data
Replies
0
Views
763
AGuiXe
A
J
Writing Assignment Trig
Replies
1
Views
809
Deleted member 4993
D
F
Graph Theory Problem: why no vertices of order 1?
Replies
1
Views
1K
ksdhart2
K
T
Triangle perimeter SSAT Q: if area of rt triangle is 9, one leg is 3, find perimeter
Replies
4
Views
2K
tathagata7
T
C
Question regarding angles and distances on a plane
Replies
3
Views
2K
stapel
stapel
A
trigonometry question: A manufacturer is making a bike where...
Replies
2
Views
1K
stapel
stapel
T
geometry proof: Given RM = SN, <MRS = <NSR, prove SM = RN
Replies
0
Views
4K
tom1242
T
C
Advanced Geometry (Cone Segments) Question
Replies
1
Views
848
Cyryn
C
K
Solve equation 3tan(2x+15)=4 for 0<x<180
Replies
4
Views
4K
HallsofIvy
H
K
Find a and b for f(x)=a-bcos(x), max is f(x)=10, min is f(x)=-2; find a, b
Replies
6
Views
5K
Steven G
Steven G
J
"If distance between ( x, -1 ) and ( 2, 3) equals 4, solve for x" & 19 other q's
Replies
4
Views
4K
Steven G
Steven G
N
Trigonometric Inequality: T/F: If 5pi/4 <= x < 3pi/2, then 0 <= cot(x) < 1
Replies
1
Views
1K
stapel
stapel
J
How to demonstrate that S = S' x Cosa
Replies
1
Views
1K
Ishuda
I
H
geometry: Angle QOP and Angle QOR are complimentary, but Angle POR is not a right ang
Replies
1
Views
1K
stapel
stapel
K
Find x-coordinates where the curve y=f(x)=a+bcos(2x) intersects the x-axis
Replies
11
Views
4K
Kayla65
K
J
find the length of AB given proportions
Replies
3
Views
1K
jpearson3
J
E
HELP Solving Trigonometric Equation sin^2 theta cos^2 theta=0
Replies
3
Views
1K
HallsofIvy
H
T
Geometry (law of sines)
Replies
1
Views
799
Deleted member 4993
D
You must log in or register to post here.
Top