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Geometry and Trig
Ask your questions about all levels of geometry from elementary school through college.
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D
What is this figure called? It looks like a filled half parabola.
Dr. T
Mar 6, 2019
Replies
1
Views
523
Mar 6, 2019
Dr.Peterson
O
Help with this problem please?
OfficialAnu
Mar 3, 2019
Replies
4
Views
533
Mar 3, 2019
MarkFL
O
Express the length of a side of Q in terms of the length of a side of P.
OfficialAnu
Mar 3, 2019
Replies
2
Views
398
Mar 3, 2019
Dr.Peterson
Area of circle is in square units???
Steven G
Mar 2, 2019
Replies
7
Views
558
Mar 3, 2019
JeffM
J
R
If side P = 8cm, Q = 7cm and side R = 5cm. So the area of the triangle is?
reisara
Mar 2, 2019
Replies
1
Views
444
Mar 2, 2019
Dr.Peterson
H
finding exact values trig: Suppose θ = tan^{-1}(12/5). Find the exact value of sin(θ)
hildaburger
Mar 1, 2019
Replies
1
Views
867
Mar 1, 2019
Otis
N
Golden Rectangles: construct a golden rectangle using an 8.5x11'' piece of paper with 11 being the desired length
NewMindRespect
Feb 28, 2019
Replies
6
Views
2K
Mar 1, 2019
Denis
D
I
A 2D point projection on a 3D segment.
IhorV
Feb 28, 2019
Replies
2
Views
436
Mar 1, 2019
HallsofIvy
H
H
Trig identities: given |x| = π / 4 What's the minimum value of: f(x) = (1 / (sec^2 x)) + sin x ?
hearts123
Feb 28, 2019
Replies
6
Views
586
Mar 1, 2019
Dr.Peterson
R
Given x(t)= e^(-kt) cos (2 pi f t), k=0.5s, f= 2hz, find when x(t)=0 for 0<=t<=1.
Ryder100
Mar 1, 2019
Replies
1
Views
1K
Mar 1, 2019
stapel
A
Geometry: shaded region formed by smaller circle being removed from larger circle; area is 64pi; smaller radius is 6
amp1053
Feb 27, 2019
Replies
5
Views
2K
Feb 27, 2019
Harry_the_cat
M
points on an unknown line: "A special right triangle has a hypotenuse that is 13 units long...."
moralesml
Feb 27, 2019
Replies
4
Views
817
Feb 27, 2019
Otis
J
Relationship between object distance, image distance, focal distance for doubly convex lenses
j_limb14
Feb 26, 2019
Replies
1
Views
543
Feb 27, 2019
Harry_the_cat
J
Looking for help on finding distances (quadrilateral with two sides, three angles known)
jakebrax
Feb 25, 2019
Replies
7
Views
841
Feb 25, 2019
Dr.Peterson
J
Question on 3D vectors: The position vectors (4,7,k) (10,-2,6) and (2,10,-2) are colinear. Find the value of k.
jessiemyapg
Feb 25, 2019
Replies
1
Views
370
Feb 25, 2019
tkhunny
T
Trigonometric Equation: Solve the equation (tanθ +1)(sin^2θ - sinθ) = 0 given that -π <= θ <= 2π
tobyweir03
Feb 22, 2019
Replies
8
Views
775
Feb 24, 2019
MarkFL
T
Fraction of the surface area of a sphere
thrakib
Feb 23, 2019
Replies
1
Views
638
Feb 23, 2019
thrakib
T
C
Rotational twist of 1.5 degrees
cminghelli
Feb 23, 2019
Replies
2
Views
393
Feb 23, 2019
Dr.Peterson
A
Magnitude of vector - seemingly impossible question!
ajc43kpc
Feb 23, 2019
Replies
4
Views
453
Feb 23, 2019
Dr.Peterson
H
trigonometry graphs/ratios question
hearts123
Feb 22, 2019
Replies
5
Views
368
Feb 22, 2019
Dr.Peterson
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