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Geometry and Trig
Ask your questions about all levels of geometry from elementary school through college.
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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
250
Mar 12, 2023
Dr.Peterson
W
Trouble understanding why two lengths are equal
Weng123
Mar 11, 2023
Replies
3
Views
317
Mar 11, 2023
blamocur
A
Sinusoidal function y = 2 sin 4 (x+ pi/8) - 2
Audentes
Mar 10, 2023
Replies
16
Views
471
Mar 10, 2023
BigBeachBanana
M
real life applications of sin(z)=2
miheer
Mar 8, 2023
Replies
2
Views
369
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
379
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
630
Mar 8, 2023
topsquark
B
Formula of circle but with negative 2 in the exponent
Boi
Feb 14, 2023
Replies
8
Views
493
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
409
Mar 6, 2023
NotJeffM
N
B
need help
bellmntl105
Mar 2, 2023
Replies
3
Views
317
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
538
Mar 1, 2023
jpanknin
J
W
MAX (X+Y) for enclose area where X, Y are positive integers but bigger or equal to 1.
westin
Feb 24, 2023
Replies
12
Views
558
Feb 24, 2023
Steven G
I
Find the value of the angle x.
Imrewq
Feb 23, 2023
Replies
2
Views
321
Feb 23, 2023
Dr.Peterson
K
Find a, b and c from the curve (graph) showing three points on y = a + b*sin(cx)
Kulla_9289
Feb 19, 2023
Replies
12
Views
667
Feb 20, 2023
Steven G
C
Calculate the radius of the circle, given 14cm chord is midway the radius
chijioke
Feb 5, 2023
Replies
16
Views
1K
Feb 20, 2023
Dr.Peterson
L
measuring intersection angle between circle and line with thickness
lathe1
Feb 13, 2023
Replies
4
Views
406
Feb 17, 2023
lathe1
L
N
Circular measure: A sector OAC subtended at O with radius 15 cm...
NinaLy
Feb 14, 2023
Replies
11
Views
507
Feb 15, 2023
MarkFL
B
Can’t do this problem¿ (triangle: m(angle B) = 73 degrees, side b opposite is 5 units, a = 7)
BobbyGTheMan
Feb 14, 2023
Replies
1
Views
569
Feb 14, 2023
Dr.Peterson
J
Trigonometric Ratios: resources that show the proof/reasoning behind the trig ratios?
jpanknin
Feb 14, 2023
Replies
8
Views
455
Feb 14, 2023
JeffM
J
K
How do I find the coordinates of B and D?
Kulla_9289
Feb 12, 2023
2
Replies
23
Views
846
Feb 13, 2023
stapel
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