Trig Identities

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Description and Tags

AP Precalculus

Unit 3: Trigonometric and Polar Functions

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16 Terms

1
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1/csc(x)

sin(x)

2
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1/sec(x)

cos(x)

3
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1/cot(x)

tan(x)

4
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sin(x)/cos(x)

tan(x)

5
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cos(x)/sin(x)

cot(x)

6
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sin²x+ cos²x

1

7
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tan²(x)+1

sec²(x)

8
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cot²(x)+1

csc²(x)

9
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2sin(x)cos(x)

sin(2x)

10
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cos²(x) - sin²(x)

cos(2x)

11
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1- 2sin²(x)

cos(2x)

12
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2cos²(x)-1

cos(2x)

13
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sin(a)cos(b) + cos(a)sin(b)

sin(a+b)

14
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sin(a)cos(b) - cos(a)sin(b)

sin(a-b)

15
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cos(a)cos(b) - sin(a)sin(b)

cos (a+b)

16
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cos(a)cos(b) + sin(a)sin(b)

cos (a-b)