Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
I
Relationship of circles and polygons
5 6 7
Replies
134
Views
10K
Ihatdogs10
I
K
Why does sin(x) = cos(90−x) and sin(90−x) = cos(x)?
Replies
11
Views
34K
Karak10
K
Π
Ladder problem
Replies
3
Views
862
Harry_the_cat
Harry_the_cat
Win_odd Dhamnekar
Using Euler's formula for proving trigonometric identities
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1
Views
1K
Dr.Peterson
Dr.Peterson
J
Calculating the volume of a sloped wedge?
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10
Views
5K
Dr.X
D
P
How to solve this Trigonometry problem?
Replies
5
Views
1K
Deleted member 4993
D
M
Inner Products and Matrices
Replies
13
Views
2K
blamocur
blamocur
L
Verifying an identity
Replies
8
Views
2K
Dr.Peterson
Dr.Peterson
S
Calculate formula needed for complex sine wave that models major and minor tides
Replies
5
Views
1K
blamocur
blamocur
A
Rotating on object so point on object faces a position
Replies
4
Views
972
Mr. Bland
M
G
Lines and planes
Replies
2
Views
649
pka
pka
C
Verifying an identity
Replies
7
Views
1K
skeeter
skeeter
L
Cosinus or Tangens? | Isometric 2.5D movement
Replies
1
Views
792
Dr.Peterson
Dr.Peterson
L
Prove the given trigonometric functions.
Replies
4
Views
907
lambert
L
U
Find the trigonometric ratios indicated
2
Replies
29
Views
4K
Otis
Otis
K
Finding an angle when three sides are given
Replies
4
Views
1K
Steven G
Steven G
K
Homework proving and solving identities
Replies
9
Views
2K
Deleted member 4993
D
I
Serious help to solve this solving trigonometric identities
Replies
2
Views
664
Steven G
Steven G
F
Need help please! Proofs
Replies
3
Views
854
Deleted member 4993
D
S
Triple angle proof
Replies
5
Views
1K
Deleted member 4993
D
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