Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
J
Solve for the value of x:cos 60 degrees +cos^2 60 degrees + cos^3 60 degrees +...+ =x
Replies
3
Views
1K
ksdhart2
K
R
Find Angle Of X
Replies
3
Views
1K
stapel
stapel
J
Trigonometry Functions with a Negative Domain
Replies
5
Views
1K
June
J
B
Tonnage (say 80 ton full) of cone given a percent full.
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1
Views
805
Deleted member 4993
D
D
Don't you be no square... (A 10by10 square contains 100 1by1 squares...)
Replies
16
Views
2K
Denis
D
I
Approximate Rectangle's Rotational Axis Given Corner Vectors?
Replies
2
Views
982
IllusionSector
I
H
Area of triangle ABC, given AB=AC=sqrt{52}, BC=8, DC=BD, altitude is AD
Replies
2
Views
1K
MarkFL
MarkFL
I
How to calculate a diameter of the beam on a given didtance?
Replies
2
Views
864
IgorFi
I
L
Distance between two gps coordinates. Solve for r and θ assuming j,b,t,w are known.
Replies
1
Views
4K
tkhunny
tkhunny
I
Can someone help me understand how to find the area of the overlapping triangle
Replies
3
Views
944
sinx
S
T
How to find projected area in the x-z plane of an ellipsoidal cap rotated by angle β?
Replies
0
Views
2K
tantribout
T
Steven G
Pizza anyone? Slice w/ larger crust has X% more crust than slice w/ smaller crust.
Replies
4
Views
2K
elensimons
E
C
Equation of a line making angle of 60° and passing through the point J(7, −5)
Replies
1
Views
792
mmm4444bot
mmm4444bot
D
sine,sos, tan: when?where? would you multiple the functions?
Replies
3
Views
1K
Steven G
Steven G
I
How to calculate the value of 'n'? ∫dx/√(2ax - x² ) = a^n sin^-1[(x/a) -1]
Replies
4
Views
1K
Dr.Peterson
Dr.Peterson
D
triangle RSQ w/ rt angle at R, alt RT (T on SQ), find length 'x' of RT
Replies
1
Views
1K
tkhunny
tkhunny
S
Is it possible to transform a polygon to graph knowing length of the sides?
Replies
1
Views
1K
Dr.Peterson
Dr.Peterson
S
Cylinder Q (studied in non-English high school; having trouble w/ English exercise)
Replies
0
Views
781
SparQz
S
I
How to calculate B = root A^2 + A^2 + 2AA Cos theta?
2
Replies
20
Views
15K
Indranil
I
K
trigonometric identities: cos2x=cos^2x-sin^2x=2cos^2x-1... Why is 2cos^2x-1 is used?
Replies
0
Views
880
ken_165
K
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