Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
G
sum/difference identity for finding exact value of tan(-75°)
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3
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14K
soroban
S
C
Suppose angles 1 and 2 are vertical. What is the value of...
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3
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3K
soroban
S
C
I need help with finding line equations, showing tri. prop's
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2
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2K
jacket81
J
T
Equation of a Plane: determine plane with three points?
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1
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2K
galactus
G
R
Help solving sin2x = cos2x between 0 and 2pi
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5
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20K
RadMad
R
G
bearing problem: find distances, given bearings, etc.
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5
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15K
galactus
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G
log base r index:3 square root of m^2 * r^5 /p
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2
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2K
soroban
S
M
Adjacent & opposite sides of a triangle...?
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1
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2K
pka
pka
G
Finding reference angles, etc.
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4
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2K
Guest
G
M
Help with proofs!!! Please!!!
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2
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2K
Sid
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S
RPM of a Lawnmower, given radius, speed of blade
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3
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2K
stapel
stapel
L
Matrix Eliminations to find intersections of planes
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4
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2K
stapel
stapel
O
finding surface area of square pyramid, given height, volume
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2
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5K
soroban
S
O
help finding surface area of triangular prism (tent)
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2
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17K
soroban
S
T
Proofs with two circles: prove XY is perp. bisector of PQ
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1
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2K
galactus
G
S
(cot x / cos x) + (sec x / cot x) = csc x * sec^2 x
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5
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3K
screambloodygore
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S
need to find radius of cylinder, given height, surface area
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1
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41K
soroban
S
J
Help: height of parallelogram is half the length of....
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1
Views
2K
Denis
D
S
csc x - sin x = cot x * cos x
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3
Views
37K
screambloodygore
S
M
Equilateral Triangle: find area, given distances to point P
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3
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4K
TchrWill
T
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