Ejercicio-11.docx - EJERCICIO 11 o H ^ DCE= 15 ^ = 40o BCD...

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EJERCICIO 11 H) ^ DCE=15 o ^ BCD=40 o T) ^ BAF=? Resp. 110 o En el triángulo rectángulo DCE : ^ DCE + ^ 2 = 90 o (Corolario 3, Teorema 1, Ángulos de un triángulo, página 43) 15 o + ^ 2 = 90 o ^ 2 = 90 o 15 o = 75 o En el punto D: ^ 2 = ^ 2 (Ángulos opuestos por el vértice, Teorema 4, Ángulos, página 30) 75 o = 75 o En el vértice C: ^ C = 40 o + 15 o = 55 o En el triángulo rectángulo BEC : ^ 1 + ^ C = 90 o (Corolario 3, Teorema 1, Ángulos de un triángulo, página 43)
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  • Summer '17
  • margarita Rivera

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