Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
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Logic problem: True or False? If n^2 = 4, then n=-2.
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4
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2K
Otis
Otis
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Surface Area of Right circular cone with only radius
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2
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1K
Otis
Otis
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trigonometry, trigonometric identities, hyperbolic functions
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3
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2K
ksdhart2
K
B
tan(x)*sin(x)=tan(x)=cos(x), help solve equation!
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2
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1K
Deleted member 4993
D
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Prove that sin(θ) + cos(θ)cot(θ)
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2
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1K
Harry_the_cat
Harry_the_cat
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Vector Geometry question
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1
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2K
Deleted member 4993
D
H
Vector Equation Line: lasers and targets
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2
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1K
helloWorld600
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Calculating internal angles and bearing of triangle
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5
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3K
Deleted member 4993
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congruence of triangles: In triangles ABC and DEG we are given that AB=DE and AC=DG
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5
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2K
egyrak
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Help Finding the Exact Values: If...cos theta = 24/7, then...
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3
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3K
MrRieding
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Trying to calculate hours of daylight per day at given date and latitude
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0
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1K
Garm
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B
Simplifying Trig Equation: (t-sint)=2pi
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1
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2K
Otis
Otis
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Trig between 0 and 360: Find beta if tan beta=-5.67 and cos beta <0.
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1
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1K
HallsofIvy
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Surface area of 3D shape: rect. block w/ many half-cylinders removed
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3
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3K
Gojam123
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J
Real World Geometry Problem Kicking My Old Butt!
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13
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4K
jim_s
J
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convex n-sided irregular polygon, largest int. angle is 160, smallest is 130.
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4
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2K
HallsofIvy
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M
ACT Math: true relationship between f(x) = (x - 3)^2 + 2 and g(x) = (1/2)x + 1
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16
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9K
stapel
stapel
M
Capacity: maller jug has a capacity of 1500cm cubed and is 13cm high
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8
Views
3K
HallsofIvy
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S
Sine angle addition identity - problem with proof
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2
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1K
syncmaster913n
S
B
need to get 2 angles: MOTOR1 spins BLACK PLATE, MOTOR2 spins yellow plate
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1
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1K
RalphD
R
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