Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
R
Repost: Perimeter of rectangle from diagonal and midpoint length
Replies
4
Views
1K
Dr.Peterson
Dr.Peterson
C
How to fit 5 samesize squares into 1 bigger square
Replies
3
Views
5K
tkhunny
tkhunny
S
Geometry: Given 2 pts on, line tangent to circle, find center, radius
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3
Views
2K
mmm4444bot
mmm4444bot
B
Stuck on a seeming simple geometry problem
Replies
3
Views
1K
Dr.Peterson
Dr.Peterson
F
Quick Question - Chandelier Installation!
Replies
1
Views
878
tkhunny
tkhunny
M
Need help to determine proper angle to place speaker
Replies
1
Views
903
Dr.Peterson
Dr.Peterson
doughishere
Rewriting log_6(15x) as log_6(15) + log_6(x) and log_6(5x) as log_6(5) + log_6(x)
Replies
6
Views
2K
doughishere
doughishere
L
Calculating a Circle's Angle by Seconds
Replies
3
Views
3K
tkhunny
tkhunny
R
Find the value of cos(x), given that sin(x) = -4/5 and π ≤ x ≤ 3π/2
Replies
3
Views
2K
mmm4444bot
mmm4444bot
J
Finding lengths of legs. (Centroid)
Replies
1
Views
908
stapel
stapel
R
find tanθ given cos(-θ)=12/13 and θ is in quadrant IV
Replies
2
Views
1K
stapel
stapel
T
Rectangle points - resizing rectangle after one corner point is moved
Replies
6
Views
2K
stapel
stapel
J
Math homework help: 1st 3 terms of seq. are "7, 14, 21"; find 42nd term
Replies
2
Views
2K
stapel
stapel
T
Sphere w/ r = 5cm is inside hollow cone, w/ 18cm from top of sphere to peak of cone.
Replies
2
Views
1K
trampolinerist
T
J
Proof for angle rules (Needing help to prove m∠3 + m∠13 = 180)
Replies
2
Views
1K
Deleted member 4993
D
B
Solve sec 2x = 2 between -Pi < x < Pi (can't find all the soln values)
Replies
7
Views
3K
tkhunny
tkhunny
M
Draw a right triangle with an acute angle and radius of incircle given
Replies
7
Views
3K
Dr.Peterson
Dr.Peterson
R
Similar Triangles: PQ, XY (=7.5cm), SR parallel; QY=13.5cm, YR=9cm
Replies
2
Views
1K
richiesmasher
R
M
Equation needed to calculate the trajectory needed to intercept another object.
Replies
1
Views
1K
Deleted member 4993
D
N
Are the options given for this question incorrect?
Replies
1
Views
1K
Dr.Peterson
Dr.Peterson
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