Trig & Inverse Trig Formula Memorization

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19 Terms

1
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sin^2

1 - cos^2

2
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cos^2

1 - sin^2

3
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sec^2

tan^2 + 1

4
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tan^2

sec^2 - 1

5
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sin(x+y)

sinx cosy + cosx siny

6
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sin(x-y)

sinx cosy - cosx siny

7
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cos(x+y)

cosx cosy - sinx siny

8
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cos(x-y)

cosx cosy + sinx siny

9
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tan(x+y)

tanx+tany / 1+tanxtany

10
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tan(x-y)

tanx-tany / 1-tanxtany

11
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sin2x

2 sinx cosx

12
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cos2x identity 1

cos²x - sin²x

13
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cos2x identity 2

2 cos²x - 1

14
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cos2x identity 3

1 - 2 sin²x

15
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tan2x

2 tanx / 1-tan²x

16
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(sin⁻¹x)'

1 / √1-x²

17
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(tan⁻¹x)'

1 / 1+x²

18
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(sec⁻¹x)'

1 / |x|√x²-1

19
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If the trig function starts with a c…

Add a negative to the derivative