Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
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IF A+B+C=PI and sin A=(sin B+sin C)/2, prove the cot B/2 *cot C/2=3
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2
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1K
SKY KEUNG
S
D
Help please w/ programming a CNC machine
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5
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2K
djvass
D
G
Question says simplify cosec x + cot x
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6
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12K
godfreyjh
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I
[Geometry] Need help with straightedge only constructions.
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2
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5K
ieatStairs
I
Z
How to find angle "a" on this shape?
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5
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1K
zemoddd
Z
D
Questions about trapezoid and parallelograms
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1
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2K
mmm4444bot
mmm4444bot
G
need help finding missing coordinate: circle w/ eqn x^2+y^2=100, chord at (0,-10),...
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5
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2K
mmm4444bot
mmm4444bot
S
please help solve: isosceles triangle ABC, right angled at B, w/ square inscribed
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6
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3K
Bob Brown MSEE
B
K
Ellipse centered in focis with axis inclination
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2
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1K
kepler
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T
Trig:How do deal with absolute value of trigonometric functions
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1
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3K
ksdhart2
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R
Triangle in a Circle w/ area 1891.59sq mtrs
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2
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1K
stapel
stapel
J
Geometry of the parabola Chord of ContactFurther theorems
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1
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1K
Jeane
J
T
Trig equation: cos(3π/2−2x)+sin(π−3x)=sin(3x)−cos(x)
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10
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4K
ksdhart2
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J
Geometry of parabola Chord of Contact: Let T(2at,at^2) be any point on parab. x^2=2ay
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0
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1K
Jeane
J
A
College level trig: what is the 30' part of Tan 62 degrees 30' ?
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10
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5K
mmm4444bot
mmm4444bot
C
quadrilateral missing sides
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2
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1K
clarkymk
C
N
Trigo, help pls: 2sin^2 (5x/2) + 4sin^2 (x/2)=3+cosx
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3
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1K
mmm4444bot
mmm4444bot
U
Hard Problem: sin ((2*pi*x)/23), sin ((pi*x)/14) and sin ((2*pi*x)/33)
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3
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2K
stapel
stapel
C
Trigonometry Challenge - Please help me solve it!
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3
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1K
stapel
stapel
V
Cartesian to Polar conversion matrix
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1
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1K
tkhunny
tkhunny
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