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Geometry and Trig
Ask your questions about all levels of geometry from elementary school through college.
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need help drawing diagram for "A retaining wall is leaning at an angle of 70° to the horizontal...."
senakuny
Mar 24, 2023
Replies
9
Views
667
Mar 24, 2023
Dr.Peterson
M
I need some locus geometry exercises
mojoy
Mar 23, 2023
Replies
1
Views
416
Mar 23, 2023
The Highlander
M
Triangle: Draw three lines through a random interior point P in triangle ABC....
MaxMontgomery
Mar 18, 2023
Replies
11
Views
939
Mar 23, 2023
MaxMontgomery
M
what have I done wrong? "if [(sinx)^4]/2 + [(cosx)^4]/3 = 1/5 then prove that (tanx)^2=2/3"
ALIAHMAD
Mar 20, 2023
Replies
7
Views
382
Mar 22, 2023
MarkFL
D
Properties of bisector from trapezoid
dea
Mar 20, 2023
Replies
1
Views
387
Mar 20, 2023
Dr.Peterson
O
Radius required when only Chord Length is Known
OB1M
Mar 14, 2023
Replies
15
Views
587
Mar 17, 2023
Otis
C
Pipe bend circumference
cjcurry
Mar 15, 2023
Replies
3
Views
309
Mar 15, 2023
cjcurry
C
B
Understanding the meaing of a convention used for sinusoidal functions.
Befuddled
Mar 14, 2023
Replies
6
Views
552
Mar 15, 2023
Befuddled
B
Z
Proof for the statement: "the equation ax+by+c=0 always expresses only 1 line"
Zach001
Mar 12, 2023
Replies
3
Views
341
Mar 12, 2023
pka
M
Is my math book wrong? sin(180° ‒ α) · sin(180° + α) ‒ cos(180° + α) · cos(180° ‒ α)
MathGuy123456789
Mar 12, 2023
Replies
2
Views
237
Mar 12, 2023
Dr.Peterson
W
Trouble understanding why two lengths are equal
Weng123
Mar 11, 2023
Replies
3
Views
307
Mar 11, 2023
blamocur
A
Sinusoidal function y = 2 sin 4 (x+ pi/8) - 2
Audentes
Mar 10, 2023
Replies
16
Views
453
Mar 10, 2023
BigBeachBanana
M
real life applications of sin(z)=2
miheer
Mar 8, 2023
Replies
2
Views
358
Mar 10, 2023
farhan
F
M
prove trig identity cos(2x) / [3 - sin(2x) - 4sin^2(x)] = [tan(x) + 1] / [tan(x) + 3]
MrClibert
Mar 8, 2023
Replies
8
Views
348
Mar 9, 2023
MrClibert
M
E
Simple geometry problem: angle PQR = θ and angle QPR = 2θ. Prove that cos θ = p/(2q)
Enceladus
Jan 24, 2023
Replies
8
Views
587
Mar 8, 2023
topsquark
B
Formula of circle but with negative 2 in the exponent
Boi
Feb 14, 2023
Replies
8
Views
467
Mar 6, 2023
Boi
B
B
Find the value of the pronumeral b in a kite where only one angle is given :)
Bolger
Mar 6, 2023
Replies
2
Views
393
Mar 6, 2023
NotJeffM
N
B
need help
bellmntl105
Mar 2, 2023
Replies
3
Views
289
Mar 3, 2023
Steven G
J
2pi Radians as a complete revolution
jpanknin
Feb 25, 2023
Replies
17
Views
1K
Mar 2, 2023
jonah2.0
J
Two Different Illustrations of Trig Ratios Tangent, Cotangent, Secant, Cosecant in terms of Unit Circle
jpanknin
Feb 26, 2023
Replies
3
Views
501
Mar 1, 2023
jpanknin
J
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