Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
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csc(x+(3pi)/2)= -sec(x) How do I verify this?
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Ishuda
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Polygon problem
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4
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peterhitter
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Finding Sin and Cot
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2
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HallsofIvy
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A
GRE Trig Question
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2K
HallsofIvy
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Trig problem!
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1
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1K
stapel
stapel
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Vector Simplification
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5
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pka
pka
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College Trigonometry: Suppose that 90 < x < 180 and tan2(x) = -1/3
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8
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3K
misty_falls
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If sinx=1/5 and x is an acute angle, then sin(pi/3+x) is?
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2
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2K
stapel
stapel
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Problems-III: solve 7csc(x)cot(x) - 9cot(x) = 0 for x in [0, 2pi)
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2
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1K
stapel
stapel
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Problems-II: exact value of cos(u/2) when 3pi < u < 7pi/2 and tan(u) = sqrt[5]/2
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2
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2K
stapel
stapel
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Problems-I: exact value of cos[arctan(-3) + sin^(-1)(sqrt[3]/2)]
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2
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3K
stapel
stapel
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Problems: Which equation matches the graph below?
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2
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stapel
stapel
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Story Problems: An observer in a lighthous spots a ship
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2
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3K
stapel
stapel
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Trigonometry
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4
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2K
Deleted member 4993
D
Z
Precalculus: sin14π/15 cos11π/60 -cos14π/15 sin11π/60=
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2
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2K
zolton5971
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Exact Value of cos(u/2) when 3pi < u < 7pi/2 and tan(u) = sqrt[5]/2
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1
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1K
Ishuda
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I
How Strong Does the Cable Need to Be?
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1
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2K
Deleted member 4993
D
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Solving a problem using a formula for arcs of contact
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7
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3K
Probability
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M
The circle
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4
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3K
Deleted member 4993
D
S
Geometry: Find F?
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6
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3K
Ishuda
I
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