Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
J
Math homework help: 1st 3 terms of seq. are "7, 14, 21"; find 42nd term
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2
Views
2K
stapel
stapel
T
Sphere w/ r = 5cm is inside hollow cone, w/ 18cm from top of sphere to peak of cone.
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2
Views
1K
trampolinerist
T
J
Proof for angle rules (Needing help to prove m∠3 + m∠13 = 180)
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2
Views
1K
Deleted member 4993
D
B
Solve sec 2x = 2 between -Pi < x < Pi (can't find all the soln values)
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7
Views
2K
tkhunny
tkhunny
M
Draw a right triangle with an acute angle and radius of incircle given
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7
Views
3K
Dr.Peterson
Dr.Peterson
R
Similar Triangles: PQ, XY (=7.5cm), SR parallel; QY=13.5cm, YR=9cm
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2
Views
1K
richiesmasher
R
M
Equation needed to calculate the trajectory needed to intercept another object.
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1
Views
942
Deleted member 4993
D
N
Are the options given for this question incorrect?
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1
Views
1K
Dr.Peterson
Dr.Peterson
S
Prove area of Square: "If you pack four squares (resp. n^2) of side s and area A,..."
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2
Views
1K
stapel
stapel
P
Area of cylinder part inside of another cylinder
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1
Views
969
stapel
stapel
M
GCSE Mocks Maths Help-Last question
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5
Views
1K
Dr.Peterson
Dr.Peterson
S
In triangle ABC ..
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1
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2K
SteveMcGregory
S
A
Find the area of the ellipse passing through given points
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1
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2K
ksdhart2
K
K
Radians: Points A, B, C and D divide circumference of circle in the ratio 1:2:3:4...
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1
Views
1K
tkhunny
tkhunny
S
How to reduce original 70" X 32" (L X H) rectangle, given new L is 50" ?
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4
Views
2K
mmm4444bot
mmm4444bot
N
Please help me find two more Equation (to prove that α=β=γ=30)
Replies
16
Views
4K
tkhunny
tkhunny
E
Vectors for astronauts' paths; fuel use for out-and-back; cylinder height
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1
Views
2K
stapel
stapel
T
Snow loading question: Find roof loading at B2 to nearest tenth of kPa
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0
Views
1K
tifmas
T
A
Can this problem be solved? Calculating angles of triangle
Replies
13
Views
5K
Ariel4
A
S
Goat Roaming: "How much space does the goat have to move around?"
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1
Views
2K
Dr.Peterson
Dr.Peterson
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