Download - Trigonometria – 9° ano
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Trigonometria – 9° anoProf.ª Manuela Avelar
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Origem da trigonometria
• A origem da trigonometria é incerta.
• Astronomia, Agrimensura e Navegações, por volta do século IV ou V a.C., com os egípcios e babilônios
• A palavra trigonometria significa medida das partes de um triângulo.
Papiro Rhind, Museu de Londres.
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Lembrete:
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Seno
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Cosseno
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Tangente
• 𝑡𝑎𝑛𝑔𝑒𝑛𝑡𝑒 =𝑐𝑎𝑡𝑒𝑡𝑜 𝑜𝑝𝑜𝑠𝑡𝑜
𝑐𝑎𝑡𝑒𝑡𝑜 𝑎𝑑𝑗𝑎𝑐𝑒𝑛𝑡𝑒
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Não entendeu?!!!!!!
KEEP CALMand
VEJA O EXEMPLO
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Vamos testar?
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Ângulos notáveis
30° 45° 60°
Seno
Cosseno
Tangente 1
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Musiquinha...1,2,3
3,2,1
Dois embaixo de
todos
Raiz onde não tem 1.
E a tangente?
Só dividir um pelo
outro
preguiçoso.....
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Bons Estudos!!!
#divirtam-se