Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
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)
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1
Views
776
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]
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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)
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0
Views
762
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
842
ken_165
K
K
trigonometric identities: cos2x=cos^2x-sin^2x... now, why is cos^2x-sin^2x is used?
Replies
3
Views
6K
ken_165
K
K
double angle identities: sin2x=2sinxcosx=2sinxcosx/cosxsec^2x•cosxsec^2x
Replies
3
Views
1K
ken_165
K
O
Considering the problem of putting n points in the surface of a sphere.
Replies
2
Views
1K
Dr.Peterson
Dr.Peterson
J
Help. Circle/Triangle Geometry: Show OMP' is similar to OMP
Replies
6
Views
1K
John1234
J
J
Surface of paraboloid
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2
Views
1K
yma16
Y
Y
Prove DE//BC, given mBD=mDC, F is on median AD, Lines CD, BE meet AD at F.
Replies
6
Views
2K
Dr.Peterson
Dr.Peterson
S
Need to calculate the length of an arc: 16' wide at base, rises 12" in center
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2
Views
1K
Dr.Peterson
Dr.Peterson
L
Triangle geometry: Let △ABC be a triangle. Let AD and CE be its internal bisectors, w
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2
Views
3K
Lemoine
L
M
Find the Sizes of these Angles (5 Q's w/ parallel lines, transversals, etc)
Replies
3
Views
941
Deleted member 4993
D
A
Ramanujan Notebook: rt triangle ABC in which two arcs of circles are centred at A & C
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2
Views
1K
apple2357
A
O
Tangent and Right Triangle
Replies
4
Views
1K
orecchionebruno
O
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