acclalg2 unit 13.4-13.6

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Last updated 11:55 PM on 8/16/26
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13 Terms

1
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obtuse angle less than or equal to adjacent

no triangle

2
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(obtuse) oppo > adj

1 triangle

3
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oppo> adj (acute)

1 triangle

4
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(acute) h>oppo

no triangle

5
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(acute) h<oppo

2 triangles

6
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height formula thingy

adj(sin angle) ___ oppo

7
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SSA area

1/2ab sin C (letters change with info given)

8
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law of cosines for

SSS SAS

9
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law of cosines

a²=b²+c²-2bc cosA

10
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herons area formula

square root—————

|s(s-a)(s-b)(s-c)

11
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arc cos-1

quad 1+2

12
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arc sin-1

1and 4

13
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arc tan-1

1and 4