Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
A
Problem with Sine Law: Find the length of the inner bisector of the corner at the top A.
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3
Views
678
tkhunny
tkhunny
F
Similar shapes: Three solid shapes A, B, C are similar; surface area A is 4cm^2, of B is 25cm^2
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2
Views
8K
freyatown
F
M
Suppose sin(x) - sin(y) = sqrt{7/3}, cos(x) + cos(y) = 1. Find cos(x + y).
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3
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1K
MarkFL
MarkFL
F
Properties of kites: Given regular hexagon (as shown), find 2 distinct kites (can only find 1)
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7
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1K
Faye
F
H
C = 90 degrees, values of sinA, sinB, sinC form geometric sequence. Find value of sinA
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1
Views
1K
Dr.Peterson
Dr.Peterson
G
What measure of Angle A will make triangle ABC similar to triangle FDE?
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2
Views
982
Dr.Peterson
Dr.Peterson
D
Towns P, Q, R are such that bearing of P from Q is 070 degrees. R 10km east of Q, PQ = 5 km.
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13
Views
3K
Denis
D
A
unit circle: if tanθ = -2/3 and θ is in quadrant II, what is the value of cosθ ?
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4
Views
740
Alpha6
A
S
Lengths of arcs AP, BP are 20, 16 respectively, as shown. Find measure of angle AXP.
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2
Views
1K
pka
pka
R
Sin/Cos periodic 2*pi: I'm getting confused about how sin(x)=sinx(x + (2*pi)) why is that?
Replies
12
Views
5K
Otis
Otis
M
How many sheets of 3/4" X 4' X 8' ply Woodard required to cover a 24' X 32 floor?
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2
Views
2K
Steven G
Steven G
S
circle touches 2 sides of square ABCD at M, N; S, T lie on sides so |AS| = |CT|, ST tangent to circle
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2
Views
603
Dr.Peterson
Dr.Peterson
C
The Ambiguous Case of the Sine Law FOM11 4.3 #7
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7
Views
1K
MarkFL
MarkFL
L
why there are two value of T instead cos22 1/2° has only one value? I am so struggling which t value is the right one? Can you tell me how choose?
Replies
1
Views
721
Dr.Peterson
Dr.Peterson
M
Did I do this right ?
Replies
1
Views
538
Harry_the_cat
Harry_the_cat
H
Distance between two points
Replies
9
Views
1K
Denis
D
F
The triangle midsegment theorem
Replies
9
Views
1K
Faye
F
G
Hollow Cylinder Question
Replies
7
Views
2K
Dr.Peterson
Dr.Peterson
S
Find a value(s) for x that would make this function undefined?
Replies
3
Views
758
JeffM
J
S
Help me with this!
Replies
2
Views
657
MarkFL
MarkFL
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