Hovedbrud 13 | Desmos

2). tan D = h / ( b + 8 ) ⇔ b =

11

Expression 12: StartFraction, "h" Over tan "D" , EndFraction minus 8

equals

1.6 8 0 6 7 2 2 5 9 3

12

1 og 2 sættes lig hinanden:

13

Expression 14: StartFraction, "h" Over tan "A" , EndFraction equals StartFraction, "h" Over tan "D" , EndFraction minus 8

14

h isoleres på venstresiden:

15

Expression 16: "h" times tangent "D" equals "h" times tangent "A" minus 8 times tangent left parenthesis, "A" , right parenthesis times tangent left parenthesis, "D" , right parenthesis

16

Expression 17: "h" equals StartFraction, negative 8 times tan left parenthesis, "A" , right parenthesis times tan "D" Over tan "D" minus tan "A" , EndFraction

equals

4.0 3 3 6 1 3 4 3 1 8 5

17

Expression 18: "a" equals "h"

equals

4.0 3 3 6 1 3 4 3 1 8 5

18

Expression 19: "c" equals StartRoot, "h" squared plus "b" squared , EndRoot

equals

4.3 6 9 7 4 7 8 8 2 9 8

19

Trekanter

20

Kontrol

39

Punkter

43

50

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