Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
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Sin(-120): how to find exact value with no calculator?
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2
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8K
skeeter
skeeter
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Perpendicular vector question
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1
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1K
skeeter
skeeter
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circle confusion
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2
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1K
soroban
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Evaluate the series to the nearest....
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1
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1K
stapel
stapel
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Help with triangle
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2
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1K
stapel
stapel
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equation of circle (pixels on computer screen)
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2
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2K
soroban
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Area of Rhombus
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4
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1K
mikosangeleyes
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Proving Trig Identities
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2
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1K
f1player
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Pythagorean Theorem: Intergrated Math
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7
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2K
Ti-Pro.doc.
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Is this correct? simplify 1/sqrt(x^2 - 9^2) when...
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2
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3K
Guest
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Solving Right Triangles
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4
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1K
stapel
stapel
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Need help solving trig equations: 2 cos^2(x) = cos(x), etc
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1
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1K
tkhunny
tkhunny
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Verify identities: 1/(secx + 1) = cot^(2)x secx - ...
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2
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2K
Guest
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secant and tangent
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9
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3K
jazziza87
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Singularities
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1
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1K
pka
pka
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Proving Trig Identities: cos x (csc x - sec x) = cot x - 1
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5
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10K
soroban
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horrible word problem! (elliptical room)
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1
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1K
galactus
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trig. identity: if a sin theta = p - b cos theta...
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1
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1K
stapel
stapel
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geometric series sum: 8 + 12 + ... + 60.75
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1
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1K
Denis
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Geometry probability
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5
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3K
tkhunny
tkhunny
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