Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
H
Trig identities: given |x| = π / 4 What's the minimum value of: f(x) = (1 / (sec^2 x)) + sin x ?
Replies
6
Views
1K
Dr.Peterson
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.
Replies
1
Views
2K
stapel
stapel
A
Geometry: shaded region formed by smaller circle being removed from larger circle; area is 64pi; smaller radius is 6
Replies
5
Views
3K
Harry_the_cat
Harry_the_cat
M
points on an unknown line: "A special right triangle has a hypotenuse that is 13 units long...."
Replies
4
Views
2K
Otis
Otis
J
Relationship between object distance, image distance, focal distance for doubly convex lenses
Replies
1
Views
800
Harry_the_cat
Harry_the_cat
J
Looking for help on finding distances (quadrilateral with two sides, three angles known)
Replies
7
Views
1K
Dr.Peterson
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.
Replies
1
Views
547
tkhunny
tkhunny
T
Trigonometric Equation: Solve the equation (tanθ +1)(sin^2θ - sinθ) = 0 given that -π <= θ <= 2π
Replies
8
Views
1K
MarkFL
MarkFL
T
Fraction of the surface area of a sphere
Replies
1
Views
981
thrakib
T
C
Rotational twist of 1.5 degrees
Replies
2
Views
579
Dr.Peterson
Dr.Peterson
A
Magnitude of vector - seemingly impossible question!
Replies
4
Views
736
Dr.Peterson
Dr.Peterson
H
trigonometry graphs/ratios question
Replies
5
Views
661
Dr.Peterson
Dr.Peterson
T
Volume
Replies
1
Views
587
Steven G
Steven G
E
Shapes: Rosa is putting cube-shaped tissue boxes into a shipping crate. each tissue box has a side length of 4 inches.
Replies
1
Views
973
tkhunny
tkhunny
D
Vectors with forces and trig help.
Replies
3
Views
2K
Dr.Peterson
Dr.Peterson
sk8erboi
Need help with finding exact values
Replies
5
Views
1K
Steven G
Steven G
sk8erboi
Need help with double angle identities
Replies
2
Views
753
sk8erboi
sk8erboi
P
Quick question on Trigonometry.
Replies
6
Views
1K
Parasite1230
P
D
Solve 4-bar linkage problem for a robot
Replies
1
Views
797
mmm4444bot
mmm4444bot
A
find coordinates of an equilateral triangle(two points given)
Replies
6
Views
2K
Dr.Peterson
Dr.Peterson
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