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Geometry and Trigonometry

Points, Lines and Angles; Plane Shapes and Solids; Constructions; Congruences and Similarities; Analytic or Coordinate Geometry; Basic Vector Geometry
Ackbach
  • Sticky
Trigonometry Trigonometry to Memorize and Trigonometry to Derive
Replies
1
Views
12K
Ackbach
Ackbach
asmmanikanda
Trigonometry How to find a length of line in quadrilateral?
Replies
1
Views
27
skeeter
skeeter
xyz_1965
Find x and y
Replies
1
Views
90
Monoxdifly
Monoxdifly
xyz_1965
Law of Tangent Ignored
Replies
14
Views
143
jonah
jonah
xyz_1965
Find Area of Gable
Replies
4
Views
95
xyz_1965
xyz_1965
C
Need help with Trig!! Thanks
Replies
1
Views
49
skeeter
skeeter
xyz_1965
Find Area of Triangle
Replies
2
Views
48
xyz_1965
xyz_1965
xyz_1965
Distance Between Two Ships
Replies
0
Views
45
xyz_1965
xyz_1965
xyz_1965
Distance Across Lake
Replies
0
Views
31
xyz_1965
xyz_1965
xyz_1965
Area of Shaded Segment
Replies
0
Views
32
xyz_1965
xyz_1965
xyz_1965
Isosceles Triangle ABC
Replies
0
Views
32
xyz_1965
xyz_1965
xyz_1965
Find AC & BC
Replies
2
Views
47
xyz_1965
xyz_1965
xyz_1965
Height of Washington Monument
Replies
2
Views
41
xyz_1965
xyz_1965
xyz_1965
Inverse of Trig Functions
Replies
16
Views
93
xyz_1965
xyz_1965
xyz_1965
Kite Distance Above the Ground
Replies
18
Views
68
xyz_1965
xyz_1965
xyz_1965
Find Angle Theta
Replies
4
Views
59
xyz_1965
xyz_1965
xyz_1965
Angle Formed By Ladder
Replies
10
Views
70
xyz_1965
xyz_1965
xyz_1965
Trigonometric Functions
Replies
2
Views
50
xyz_1965
xyz_1965
xyz_1965
cot (0)
Replies
9
Views
64
xyz_1965
xyz_1965
xyz_1965
Points A & B Out At Sea
Replies
8
Views
60
xyz_1965
xyz_1965
xyz_1965
cot (60°)
Replies
2
Views
29
xyz_1965
xyz_1965
xyz_1965
A Tree Application
Replies
4
Views
59
xyz_1965
xyz_1965
xyz_1965
Find Legs of Right Triangle
Replies
2
Views
48
xyz_1965
xyz_1965
xyz_1965
Building A and B
Replies
2
Views
42
xyz_1965
xyz_1965
B
I have no answers for these questions.. please help me!
Replies
3
Views
386
Country Boy
C
W
How should you draw this sketch?
Replies
1
Views
99
skeeter
skeeter
C
What does the following means?
Replies
2
Views
238
Country Boy
C
anemone
Find the area of the shaded region
Replies
2
Views
187
anemone
anemone
H
Volume and surface area of "One World Trade Center"
Replies
5
Views
230
Jameson
Jameson
anemone
Find the diameter of one circle
Replies
3
Views
136
anemone
anemone
S
Couple of hard trig questions...
Replies
1
Views
178
MarkFL
M
Amathproblem22
Addition of two sinusoids
Replies
3
Views
243
MarkFL
M
J
Line in second quadrant
Replies
3
Views
239
Joe_1234
J
J
Trapezoid
Replies
5
Views
159
MarkFL
M
O
Relationship between inner and outer radius of a two concentric circles
Replies
2
Views
136
MarkFL
M
C
Bearings-Finding the angle of B as well as the finding the bearing from point A to Point C.
Replies
3
Views
181
skeeter
skeeter
P
Find the points of intersection of a line and a circle
Replies
2
Views
302
kaliprasad
kaliprasad
mathmari
Trigonometry Acute angle of right triangles
Replies
4
Views
297
mathmari
mathmari
C
Trigonometry Using laws of sines and cosines to solve for a triangle
Replies
2
Views
190
MarkFL
M
A
Trigonometry Find the volume of the hexagonal-shaped plastic box
Replies
4
Views
275
Prove It
P
A
Find the intersection point for x = -5 + 8t, y = 1 + 10t, z = 9 + 8t ; -2x + 8y + 8z = 10
Replies
1
Views
548
Prove It
P
L
Trigonometry Solve trig equation cos(2x+20)=-cos(x-11)
Replies
5
Views
884
laprec
L
M
Math Cumulative Review: Find the equation of a Line
Replies
2
Views
844
HallsofIvy
H
masters
Find the scale factor of triangle ABC to triangle DEF
Replies
5
Views
697
masters
masters
karush
[SOLVED] al.008 GRE Exam Integers Product of two integers is -48 but their sum is a positive number
Replies
2
Views
365
karush
karush
Monoxdifly
[ASK] Geometry and Series
Replies
2
Views
306
HallsofIvy
H
Monoxdifly
[ASK] Area of a Triangle
Replies
3
Views
239
Klaas van Aarsen
Klaas van Aarsen
karush
030 GRE Geometry similiar triangles
Replies
2
Views
353
HallsofIvy
H
K
Finding 2D Polygon Coordinates from a point
Replies
2
Views
304
Krotus
K
T
The smallest circle that two parts of a semi-circle can fit into?
Replies
1
Views
336
LCKurtz
LCKurtz
Dhamnekar Winod
Maximum area of rectangle which circumscribes the given quadrilateral.
Replies
21
Views
1K
Klaas van Aarsen
Klaas van Aarsen
J
Trigonometry Amplitude, Period, frequency and phase angle
Replies
1
Views
754
skeeter
skeeter
Monoxdifly
[ASK] Equation of a Circle in the First Quadrant
Replies
4
Views
459
Monoxdifly
Monoxdifly
T
Find the missing coordinates
Replies
1
Views
249
skeeter
skeeter
Monoxdifly
[ASK] A Circle Which Touches the X-Axis at 1 Point
Replies
2
Views
284
Monoxdifly
Monoxdifly
Monoxdifly
Trigonometry [ASK] Proving Trigonometry 2sinα+2sinβ+2sinγ=4sinαsinβsinγ
Replies
4
Views
1K
Greg
Greg
T
Need help finding Diagonals of a Rhombus
Replies
2
Views
473
Opalg
Opalg
N
How many marbles are in a jar?
Replies
1
Views
369
Nick C
N
Monoxdifly
Trigonometry [ASK} Prove (cos2x+cos2y)/(sin2x−sin2y)=1/tan(x−y)
Replies
2
Views
669
Monoxdifly
Monoxdifly
G
Surface of Angular Land
Replies
6
Views
701
ghostfirefox
G
G
Calculate the length of the fourth side edge.
Replies
3
Views
454
skeeter
skeeter
Monoxdifly
[ASK] About Triangle where A as the right angle and BD is the bisector of angle B
Replies
2
Views
412
Monoxdifly
Monoxdifly
G
Points in a square, surface
Replies
1
Views
250
skeeter
skeeter
T
Golden section and yin-yang symbol proportions
Replies
2
Views
382
tongtu
T
G
Analytic geometry proof with triangle.
Replies
3
Views
544
ghostfirefox
G
karush
[SOLVED] GRE Circles exam question: Find the shaded area as a fraction
Replies
8
Views
690
karush
karush
N
height/diameter relationship of 19 (H8/D8=19)
Replies
2
Views
530
nelg
N
E
problem solving calculating area
Replies
7
Views
626
Monoxdifly
Monoxdifly
A
Check if two points are symmetrics/asymmetric
Replies
2
Views
599
LCKurtz
LCKurtz
G
Find slant height of a cone
Replies
2
Views
947
HallsofIvy
H
Monoxdifly
[ASK] Equation of a Circle
Replies
4
Views
741
Monoxdifly
Monoxdifly
P
Geostationary Orbit
Replies
3
Views
486
HallsofIvy
H
S
Trigonometry solving trig equation cos(x)=sin(x) + 1/√3
Replies
3
Views
2K
kaliprasad
kaliprasad
B
Find the angle of the parable tangent derived from the theoretical arc traced by a foot
Replies
1
Views
652
MarkFL
M
karush
[SOLVED] 236 GRE exam Three circles with centers on the same line segment PQ
Replies
2
Views
535
karush
karush
B
Trigonometry Trigonometry: Right-angled triangle
Replies
1
Views
851
skeeter
skeeter
Monoxdifly
[ASK] Find the volume of Pyramid in a Cube
Replies
6
Views
933
Monoxdifly
Monoxdifly
L
Year 10 Maths Find the length and width that will maximize the area of rectangle
Replies
2
Views
491
Greg
Greg
Z
Trigonometry Largest Quadrilateral inscribed in Scalene Triangle
Replies
0
Views
374
Zane
Z
S
Trigonometry Real world trigonometry problem making furniture
Replies
1
Views
510
skeeter
skeeter
P
Trigonometry Angle of elevation: Which expression represents the eagle's height above the ground? (answer involves tan)
Replies
2
Views
563
HallsofIvy
H
M
Prove AC//BD and AF//BE
Replies
1
Views
766
Opalg
Opalg
G
Smallest possible area of triangle
Replies
3
Views
657
HallsofIvy
H
Monoxdifly
[ASK] Find the ratio of the area of triangle BCH and triangle EHD
Replies
4
Views
724
Monoxdifly
Monoxdifly
G
Solve for the angles in a triangle
Replies
4
Views
646
gazparkin
G
Y
Tangent line of a Circle
Replies
5
Views
1K
Olinguito
Olinguito
N
Given nets draw the figure
Replies
3
Views
586
skeeter
skeeter
G
Trigonometry Find angles in triangle
Replies
2
Views
737
gazparkin
G
S
finding dot product
Replies
4
Views
2K
HallsofIvy
H
Z
The height of a section of overlapping circles.
Replies
3
Views
627
Greg
Greg
Z
Find the exact shaded area of the region in 4 overlapping circles
Replies
1
Views
616
Olinguito
Olinguito
J
Planes Question
Replies
1
Views
547
Klaas van Aarsen
Klaas van Aarsen
D
Trigonometry Angular Velocity
Replies
4
Views
3K
didaw
D
Y
Trigonometry Trigonometric Question sin^2(180-x) cosec(270+x) + cos^2(360-x) sec(180-x)
Replies
1
Views
566
skeeter
skeeter
G
Trigonometry prove identity (sinx+cosx)/(secx+cscx)= sinxcosx
Replies
1
Views
533
MarkFL
M
karush
Trigonometry km8,38 Find the value of \theta if it exists
Replies
4
Views
575
karush
karush
karush
Trigonometry 33. Express sin 4x in terms of sin x and cos x
Replies
1
Views
563
skeeter
skeeter
W
Circles in a square and diameter of the circle
Replies
3
Views
908
Olinguito
Olinguito
T
Trigonometry Finding Chord length given arc length and arc height?
Replies
0
Views
528
tomadom
T
C
Singapore Ferris wheel with 30 minutes of revolution time
Replies
1
Views
1K
skeeter
skeeter
K
Trigonometry Making a formula that finds the horizontal and vertical distance between two points that change with
Replies
1
Views
1K
skeeter
skeeter
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