Math Analysis - Trigonometric Identities
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Last updated 6:02 PM on 2/3/25
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20 Terms
1
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csc
1/sin
2
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sec
1/cos
3
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cot
1/tan or cos/sin
4
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tan
sin/cos
5
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cos(-t) / sec(-t)
cos(t) / sec(t)
6
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sin(-t) / csc(-t)
-sin(t) / -csc(t)
7
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tan(-t) / cot(-t)
-tan(t) / -cot(t)
8
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sin^2(x) + cos^2(x)
1
9
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tan²x+1
sec²x
10
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cot²x+1
csc²x
11
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area of circle
πr²
12
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circumference of a circle
2πr
13
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arc length
s/2πr = theta/360 degrees
14
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area of a sector
A/πr² = theta/360 degrees
15
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45-45-90
hyp = square root 2 * leg
16
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30-60-90
long leg = square root 3*short leg
hyp = 2*short leg
17
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degrees → radians
theta(π)/180
18
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radians → degrees
radians(180)/π
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sin(2theta)
2sin(theta)cos(theta)
20
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cos(2theta)
cos²(theta)-sin²(theta)
Note 
Flashcards (24)