Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
H
Prove that arcsin(1/2) + arcsin(1/3) = arcsin( (2√2+√3)/6 )
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5
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5K
hndalama
H
P
Help with a Distance problem.
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2
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2K
ptcesq
P
T
Calculating lengths from Engineering Drawing
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2
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2K
Thumpasaurus
T
N
Help with Proofs and Theorems
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14
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5K
NamiNuitsuki
N
P
Find equations of common tangents to parabola y^2=15x, circle x^2+y^2=16
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1
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2K
stapel
stapel
C
Geometry: A single LED bulb illuminates light from a single point in all directions.
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1
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2K
stapel
stapel
H
Prove this identity: sin^2(x + 45) + cos^2(x - 45)
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4
Views
5K
hndalama
H
T
Find unknown angles of a triangle!!!
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3
Views
2K
Otis
Otis
N
Inverse Trignometry: if x1,x2,x3,x4 are roots of eqn, then find sum of tan^-1 x
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2
Views
3K
stapel
stapel
Z
Is this a valid demonstration of how to draw a line parallel to another?
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3
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2K
ZeHgS
Z
W
semiregular hexagon area: If GH=2HJ=JK=2KL=LM=2MG and GK = 12, determine perimeter of
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1
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1K
stapel
stapel
L
Angles in parallel lines , Please can i have a little help please
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1
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2K
stapel
stapel
N
Trig. Q: If cosθ = 0.7, find the value of cos(θ - 4π) + cos(θ + 2π)
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2
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4K
pka
pka
E
Trig. Q: The two tangents from a point A to a circle touch the circle at S and at T.
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1
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2K
stapel
stapel
D
Hopefully a Simply Circle Problem
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1
Views
1K
Daveyb
D
J
Finding an angle, info i have, width, rise, radius.
Replies
0
Views
780
JMace
J
E
Trig Question: solve tan(x/2+pi/3)=1 on the interval [0, 2pi]
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3
Views
1K
eh6794
E
M
single resultant force - trig
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4
Views
1K
MissG
M
L
if 0° ≤ θ < 360°.sin θ = 0.9625 with θ in QII, find θ to nearest tenth of degree
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2
Views
5K
Harry_the_cat
Harry_the_cat
E
Given: < 3 is supp. to < 4. Prove: BD // FE
Replies
1
Views
948
stapel
stapel
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