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Last updated 10:46 PM on 4/22/26

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17 Terms

1

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cos²𝛳 + sin²𝛳 =

1

2

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sin²𝛳 =

1 - cos²𝛳

3

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cos²𝛳 =

-sin²𝛳 + 1

4

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y/x tan𝛳 =

sin𝛳/cos𝛳

5

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y/x cot𝛳 =

cos𝛳/sin𝛳

6

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sin𝛳 =

1/csc𝛳

7

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csc 𝛳

1/sin𝛳

8

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cos𝛳 =

1/sec𝛳

9

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sec𝛳 =

1/cos𝛳

10

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tan𝛳 =

1/cot𝛳

11

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cot𝛳 =

1/tan𝛳

12

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PYI: sec²𝛳 =

1 + tan²𝛳

13

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PYI: tan²𝛳 =

sec²𝛳 - 1

14

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PYI: csc²𝛳 =

cot²𝛳 + 1

15

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PYI: cot²𝛳 =

csc²𝛳 - 1

16

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sec²𝛳 - tan²𝛳 =

1

17

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csc²𝛳 - cot²𝛳 =

1