Equations, Formulae

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22 Terms

1
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Sin0

0

2
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Sin30

1/2

3
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Sin45

sqrt(2) / 2

4
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Sin60

sqrt(3) / 2

5
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Sin90

1

6
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Cos0

1

7
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Cos30

sqrt(3) / 2

8
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Cos45

sqrt(2) / 2

9
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Cos60

1 / 2

10
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Cos90

0

11
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Tan0

0

12
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Tan30

1 / sqrt(3)

13
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Tan45

1

14
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Tan60

sqrt(3)

15
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Tan90

X

16
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Interior angles

180 (n - 2)

17
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Sum of exterior angles

360

18
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Cosine rule

Cos A = (b² + c² - a²) / 2bc

19
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Area of a triangle

½ a b sin(C)

20
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Inequalities: line NOT included

Dotted line

21
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Inequalities: line included

Solid line

22
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Area shaded in?

Not needed
If in doubt, substitute values to see if shaded or not