a geometria plana é uma verdadeira obra de arte
*Cupom 10% de desconto* em *todos os cursos online* do Estratégia Militares: QED
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Quer masterizar trigonometria? Confira meu eBook de demonstração de 27 identidades trigonométricas: https://go.hotmart.com/U78425539A?dp=1
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*1 Tópicos teóricos abordados*
• Teorema da bissetriz interna
• Fórmula trigonométrica para áreas de triângulos
• Inraio
• Semiperímetro de um triângulo
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*2 Enunciado* O trângulo ABC da figura abaixo tem área S. Sabendo que AB = BC = 2AC, BH é altura e AD é bissetriz do ângulo A, área da região hachurada, em função de S é:
Resposta: 7S/30.
(Colégio Naval 82/83) Um triângulo ABC circunscreve um círculo de raio R. O segmento de tangente ao círculo tirado do vértice A mede 4 cm. Se o lado oposto a esse vértice mede 5 cm, a área do triângulo ABC é:
Resposta: 9R cm².
_Caso você tenha resolvido o problema por um caminho alternativo, não deixe de comentá-lo para assim enriquecermos a discussão_
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*3 Sugestão de problemas*
Envie uma sugestão de problema e eu a resolverei em vídeo – https://bit.ly/QED_forms
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*4 Equipamentos utilizados*
4.1 Mesa digitalizadora – https://amzn.to/3EhLXPE
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4.6 Headset – https://amzn.to/3Z6C9RP
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