Respuesta:
Explicación paso a paso:
[tex]Lados: AB = 7cm[/tex] ; [tex]BC = 8cm[/tex]
[tex]Ángulo -menor:<B = 15^{0}[/tex]
[tex]Ángulo-mayor: C = 145^{0}[/tex]
Diagonal mayor: BD = ?
Aplicando el teorema de los cosenos:
[tex](BD)^{2} = (AB)^{2} + (BC)^{2} -2(AB)(BC)cos C[/tex]
[tex](BD)^{2} = (7cm)^{2} + ( 8cm)^{2} -2(7cm)(8cm)Cos145^{0}[/tex]
[tex](BD)^{2} = 47cm^{2} +64cm^{2} -(112cm^{2} )(-0.8192)[/tex]
[tex](BD )^{2} =113cm^{2} + 91.7504cm^{2}[/tex]
[tex](BD)^{2} =204.7504cm^{2}[/tex]
[tex]BD = \sqrt{204.7504cm^{2} }[/tex]
[tex]BD = 14.31cm[/tex]
RESPUESTA:
[tex]14.31cm[/tex]
Gráfico:
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Verified answer
Respuesta:
Explicación paso a paso:
[tex]Lados: AB = 7cm[/tex] ; [tex]BC = 8cm[/tex]
[tex]Ángulo -menor:<B = 15^{0}[/tex]
[tex]Ángulo-mayor: C = 145^{0}[/tex]
Diagonal mayor: BD = ?
Aplicando el teorema de los cosenos:
[tex](BD)^{2} = (AB)^{2} + (BC)^{2} -2(AB)(BC)cos C[/tex]
[tex](BD)^{2} = (7cm)^{2} + ( 8cm)^{2} -2(7cm)(8cm)Cos145^{0}[/tex]
[tex](BD)^{2} = 47cm^{2} +64cm^{2} -(112cm^{2} )(-0.8192)[/tex]
[tex](BD )^{2} =113cm^{2} + 91.7504cm^{2}[/tex]
[tex](BD)^{2} =204.7504cm^{2}[/tex]
[tex]BD = \sqrt{204.7504cm^{2} }[/tex]
[tex]BD = 14.31cm[/tex]
RESPUESTA:
[tex]14.31cm[/tex]
Gráfico: