Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
E
Irregular quadillateral help
Replies
9
Views
1K
energy235
E
A
Prove that cos^2 3π/7 - cos^2 3π/14 + cos^2 π/7 = 1/4
Replies
3
Views
927
Deleted member 4993
D
J
Trigonometric Identities Question
Replies
1
Views
675
Deleted member 4993
D
W
Graphs for trig
Replies
7
Views
2K
Dr.Peterson
Dr.Peterson
I
Special right triangles (30-60-90)
Replies
2
Views
670
Steven G
Steven G
A
Determine the equation
Replies
9
Views
2K
Steven G
Steven G
A
The absolute value
Replies
3
Views
992
Dr.Peterson
Dr.Peterson
T
Brother needs answers to work
Replies
2
Views
666
Deleted member 4993
D
C
Need help on these two questions
Replies
1
Views
606
Dr.Peterson
Dr.Peterson
A
Determine the distance
Replies
7
Views
1K
jonah2.0
jonah2.0
S
Masonry - how many bricks
Replies
2
Views
714
Deleted member 4993
D
B
Hexadecagon (16 side polygon) Help!
Replies
6
Views
3K
bikerbear
B
1
Simulate sound in 3d space?
Replies
4
Views
962
1bytecharhaterxxx
1
R
Pyramids
Replies
10
Views
2K
Dr.Peterson
Dr.Peterson
J
Trig Identities
Replies
4
Views
1K
Dr.Peterson
Dr.Peterson
C
Can some PLEASE help with similar proofs’!!
Replies
1
Views
544
Deleted member 4993
D
A
Determine the angle
Replies
2
Views
655
Dr.Peterson
Dr.Peterson
A
Determine the equation, two points
Replies
8
Views
1K
Ana.stasia
A
A
Determine the equation using two dots
Replies
4
Views
836
Ana.stasia
A
C
plot a function
Replies
3
Views
726
Deleted member 4993
D
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