Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
S
teacher couldn't help me understand: y'-2y=sin(x) to -sin x(B + 2A) + cos x(A-2B)=...
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9
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3K
Dr.Peterson
Dr.Peterson
R
Find angle of latitude: distance between P (63° N, 70°E), R (63° N, x° E) is 900km
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19
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4K
richiesmasher
R
W
How to find top and sides of trapezoid when all of them are equal?
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1
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1K
Deleted member 4993
D
J
Relationship between two planes - calculating an angle
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3
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2K
Dr.Peterson
Dr.Peterson
G
How to find the acceleration of a particle on a freely moving wedge
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1
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1K
gnits
G
T
Adding Frac Trig Fcns: Going from X2/Tan(55) + X2/Tan(75)=87120 to 5.16X2/5.329=87120
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2
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1K
TMcKinney
T
B
Made-up Circle Problem
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2
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2K
yma16
Y
S
X & Y proportional scale
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1
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1K
Dr.Peterson
Dr.Peterson
K
An 'undefined' answer with sine rule [non-right angled triangles]
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3
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2K
mmm4444bot
mmm4444bot
B
Trig Difference Identity: when I do sin(-15) = sin(30-45), I get a positive result
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2
Views
951
Dr.Peterson
Dr.Peterson
J
Parallel line and Triangle with missing angle
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4
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1K
Jim77
J
N
Finding the interior angles of a triangle when given the sides lengths of 2,3,4
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1
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935
tkhunny
tkhunny
J
Ratios Of Lines Within Quadrilateral (Proof): Show AX:XC is same as AB:BC
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11
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3K
Dr.Peterson
Dr.Peterson
R
Find coressponding values of tanx for each x in 0°≤x≤270°
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0
Views
808
richiesmasher
R
J
Parallel Lines Of Equal Length Within Square: smallest possible value for angle SPA?
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8
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3K
Jonathan
J
V
2 by 2 by 3 Right triangle
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2
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1K
Dr.Peterson
Dr.Peterson
H
How do I do problem numbers: 6, 9 , 10, 11(please just answers I have no time) and pl
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3
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1K
mmm4444bot
mmm4444bot
W
Need answer asap: RQ is a perpendicular bisector PS at Q between P and S. <SPR is...
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5
Views
4K
stapel
stapel
P
Finding the angle of two related triangles: can use specific values in AutoCAD, but
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4
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2K
Pentarick
P
E
Need help with algebra
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1
Views
765
mmm4444bot
mmm4444bot
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