Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
M
Use trig idents to simplify tan(-β)cos(β)= -tan(β) cos(β)= -sinβ/cosβ * cosβ/1=...
Replies
4
Views
2K
Dr.Peterson
Dr.Peterson
G
Finding roots of 3 sin^3 (x) + 5 sin^2 (x) - 2 sin(x) = 0 on (-pi, pi)
Replies
2
Views
1K
stapel
stapel
G
Determining angle's VALUES: solve 8 tan(b) = 3 cos(b), 0 < b < pi
Replies
2
Views
1K
stapel
stapel
P
Geometry:In quadrilateral abcd, AC=ad & bc=cd. The shortest distance of AC from d is
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2
Views
2K
Dr.Peterson
Dr.Peterson
A
SAT practice Prob: missing side of right triangle for removable handicap access ramps
Replies
4
Views
3K
Dr.Peterson
Dr.Peterson
J
Calculating distance between pubs in a given area?
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1
Views
2K
Jonathan
J
M
Son's Yr-7 HW: write 3 Q's to isolate single shape from isos. trapezium, right trap.,
Replies
2
Views
1K
Dr.Peterson
Dr.Peterson
A
Navigating around concave 3d shape (efficient steering behavior)
Replies
0
Views
866
Andreas
A
doughishere
Inverse Fcns: For f(x) = 1/(3x + 2), f^(-1)(x) = (1 - 2x)/(3x), show f(f^(-1)(x)) = x
Replies
2
Views
974
doughishere
doughishere
K
Pythagoras' theorem questions
Replies
2
Views
1K
KMCC
K
W
Mechanics on static particles - where did i go wrong?
Replies
0
Views
900
wduk
W
M
Prove truth of circle division theory by 5 equal parts
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2
Views
2K
JeffM
J
D
Angular Sizing with Reference Objects in Image
Replies
8
Views
3K
mmm4444bot
mmm4444bot
saurabh
length of segment in parallelogram: BC = 4 cm , CD = 9 cm then what is AP ?
Replies
2
Views
2K
saurabh
saurabh
A
Exception to the Reflexive Property of Equality
Replies
17
Views
6K
austint
A
R
Verifying Trig Identites: (cos(a)+cos(b))^2 + (sin(a)-sin(b))^2 = 2+2cos(a+b) and...
Replies
7
Views
2K
Dr.Peterson
Dr.Peterson
S
Area of a right angled triangle missing height.
Replies
2
Views
1K
SaltyPoro
S
E
how many 26 degree agles in a 2017 corner
Replies
8
Views
2K
enoimreh7
E
P
Double-, Half-Angle Idents: If tan(pi/8)=sqrt{A}-B, find A,B using half-angle ident.
Replies
2
Views
2K
stapel
stapel
L
Need help for my precal HW: tan(t) = -1/√(3), 2(sin(x))^2 - 5(cos(x)) - 4 = 0
Replies
3
Views
2K
stapel
stapel
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