Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
C
Pipe bend circumference
Replies
3
Views
821
cjcurry
C
B
Understanding the meaing of a convention used for sinusoidal functions.
Replies
6
Views
1K
Befuddled
B
Z
Proof for the statement: "the equation ax+by+c=0 always expresses only 1 line"
Replies
3
Views
788
pka
pka
M
Is my math book wrong? sin(180° ‒ α) · sin(180° + α) ‒ cos(180° + α) · cos(180° ‒ α)
Replies
2
Views
627
Dr.Peterson
Dr.Peterson
W
Trouble understanding why two lengths are equal
Replies
3
Views
781
blamocur
blamocur
A
Sinusoidal function y = 2 sin 4 (x+ pi/8) - 2
Replies
16
Views
2K
BigBeachBanana
BigBeachBanana
M
real life applications of sin(z)=2
Replies
2
Views
835
farhan
F
M
prove trig identity cos(2x) / [3 - sin(2x) - 4sin^2(x)] = [tan(x) + 1] / [tan(x) + 3]
Replies
8
Views
1K
MrClibert
M
E
Simple geometry problem: angle PQR = θ and angle QPR = 2θ. Prove that cos θ = p/(2q)
Replies
8
Views
2K
topsquark
topsquark
Boi
Formula of circle but with negative 2 in the exponent
Replies
8
Views
1K
Boi
Boi
B
Find the value of the pronumeral b in a kite where only one angle is given :)
Replies
2
Views
860
NotJeffM
N
B
need help
Replies
3
Views
778
Steven G
Steven G
J
2pi Radians as a complete revolution
Replies
17
Views
7K
jonah2.0
jonah2.0
J
Two Different Illustrations of Trig Ratios Tangent, Cotangent, Secant, Cosecant in terms of Unit Circle
Replies
3
Views
1K
jpanknin
J
W
MAX (X+Y) for enclose area where X, Y are positive integers but bigger or equal to 1.
Replies
12
Views
1K
Steven G
Steven G
I
Find the value of the angle x.
Replies
2
Views
657
Dr.Peterson
Dr.Peterson
K
Find a, b and c from the curve (graph) showing three points on y = a + b*sin(cx)
Replies
12
Views
2K
Steven G
Steven G
C
Calculate the radius of the circle, given 14cm chord is midway the radius
Replies
16
Views
4K
Dr.Peterson
Dr.Peterson
L
measuring intersection angle between circle and line with thickness
Replies
4
Views
923
lathe1
L
N
Circular measure: A sector OAC subtended at O with radius 15 cm...
Replies
11
Views
1K
MarkFL
MarkFL
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