apprecal trig identities
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Last updated 9:20 PM on 3/9/26
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20 Terms
1
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sin
1/csc
2
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cos
1/sec
3
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tan
1/cot
4
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cot
1/tan
5
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csc
1/sin
6
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sec
1/cos
7
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tan
sin/cos
8
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cot
cos/sin
9
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sin2 + cos2
1
10
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tan2 + 1
sec2
11
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cot2 + 1
csc2
12
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sin(A ± B)
sinAcosB ± cosAsinB
13
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cos(A - B)
cosAcosB + sinAsinB
14
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cos(A + B)
cosAcosB - sinAsinB
15
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sin(2θ)
2sin(θ)cos(θ)
16
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cos(2θ)
cos2θ - sin2θ
17
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tan(90 - θ)
cot(θ)
18
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tan(A + B)
(tanA + tanB)/(1 - tanAtanB)
19
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tan(A - B)
(tanA - tanB)/( 1 + tan AtanB
20
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tan(2θ)
(2tanθ)/(1 - tan2θ)
