Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
N
Sum of shaded areas: The area of a rectangle ABCD is 1. Assume E is on the diagonal AC...
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2
Views
2K
nanase
N
E
Quadrilateral with 2 congruent sides and two other sides not congruent. How do I solve this without Trig?
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3
Views
1K
stapel
stapel
A
Geometry problem with a limit: Given a parallelogram ABCD with sides AB = 2a, AD = a.
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1
Views
947
blamocur
blamocur
N
number of shortest paths possible from black triangle to bottom row
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13
Views
3K
nanase
N
J
Construction layout: Will 2 semicircles with d=28-11/16" fit in wood 48" wide, 96" long?
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7
Views
1K
blamocur
blamocur
J
Trig sin cos and tan angle circle: tan(4pi/3), cos(11pi/6), sin(5pi/4) in Q1
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8
Views
3K
Dr.Peterson
Dr.Peterson
L
All of the points in this graph -- (1, 5), (a, 11), (6, b), (8, 19) -- are on the same line
Replies
19
Views
3K
blamocur
blamocur
G
CNC task. Is it possible to find length with this data?
Replies
5
Views
1K
gor
G
1
Forces: A joint which is part of a loaded framework carries a vertically downward load of 14kN.
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9
Views
3K
khansaheb
K
L
a new dilation with center (2,2) sends C to (11,6.5) what is the scale factor? Explain how you know
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5
Views
2K
blamocur
blamocur
D
Angle of wind required to spin a sphere at a certain speed
Replies
1
Views
797
blamocur
blamocur
A
How to solve the part between the red lines: Show that the eqn of the locus of the point of....
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1
Views
889
stapel
stapel
L
determining missing point coordinates using slope
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3
Views
2K
lu346
L
L
Triangle ABC, with interior pt D, |BD| = log_9(18), |CD| = log_2(18); find length X of AD
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4
Views
1K
khansaheb
K
F
prove a trigonometric equation: If √2cosA = cosB + cos³B and √2sinA = sinB - sin³B, then...
Replies
2
Views
1K
khansaheb
K
M
How - 22 turn into 121....and in line seven how i get 226?
Replies
9
Views
2K
Dr.Peterson
Dr.Peterson
shahar
Sum of angles in circle (five-cornered star inscribed in circle; chords have equal lengths)
Replies
9
Views
2K
khansaheb
K
C
Inclined Plane vector problem ("A 100kg TV is loaded onto a truck using a ramp at a 30-deg angle.")
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5
Views
2K
Dr.Peterson
Dr.Peterson
G
A cone and cylinder are joined to make a solid. (The cone is on top of the cylinder.)
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2
Views
1K
Dr.Peterson
Dr.Peterson
C
Vector addition, trying to find the angle (resulting velocity of plane with respect to ground)
Replies
7
Views
2K
Harry_the_cat
Harry_the_cat
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