Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
Y
Find area ABCD in a rectangle. The numbers are the areas inside the rectangle.
Replies
3
Views
1K
yma16
Y
M
cosinushyperbolic with imaginary number
Replies
4
Views
986
stapel
stapel
N
Drawing the Golden Ratio Geometrically
Replies
3
Views
1K
Dr.Peterson
Dr.Peterson
M
Solving sin (2x) cos x = cos (2x) using sum or difference identities
Replies
7
Views
3K
Dr.Peterson
Dr.Peterson
A
Help, H.S. Math - Bisector congruence.
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1
Views
3K
Dr.Peterson
Dr.Peterson
S
Math worksheets
Replies
1
Views
821
Deleted member 4993
D
K
Values of r and h (don't know they are estimated)
Replies
6
Views
1K
kinfo
K
B
Polar to Rectangular: convert cos(θ)sin(θ) – 2 = 0 to rectangular equation
Replies
5
Views
2K
Dr.Peterson
Dr.Peterson
R
Repost: Perimeter of rectangle from diagonal and midpoint length
Replies
4
Views
1K
Dr.Peterson
Dr.Peterson
C
How to fit 5 samesize squares into 1 bigger square
Replies
3
Views
4K
tkhunny
tkhunny
S
Geometry: Given 2 pts on, line tangent to circle, find center, radius
Replies
3
Views
2K
mmm4444bot
mmm4444bot
B
Stuck on a seeming simple geometry problem
Replies
3
Views
1K
Dr.Peterson
Dr.Peterson
F
Quick Question - Chandelier Installation!
Replies
1
Views
799
tkhunny
tkhunny
M
Need help to determine proper angle to place speaker
Replies
1
Views
790
Dr.Peterson
Dr.Peterson
doughishere
Rewriting log_6(15x) as log_6(15) + log_6(x) and log_6(5x) as log_6(5) + log_6(x)
Replies
6
Views
2K
doughishere
doughishere
L
Calculating a Circle's Angle by Seconds
Replies
3
Views
3K
tkhunny
tkhunny
R
Find the value of cos(x), given that sin(x) = -4/5 and π ≤ x ≤ 3π/2
Replies
3
Views
1K
mmm4444bot
mmm4444bot
J
Finding lengths of legs. (Centroid)
Replies
1
Views
802
stapel
stapel
R
find tanθ given cos(-θ)=12/13 and θ is in quadrant IV
Replies
2
Views
1K
stapel
stapel
T
Rectangle points - resizing rectangle after one corner point is moved
Replies
6
Views
2K
stapel
stapel
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