
Ley de los cosenos
Presentation
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
Daniel Quiroga
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6 Slides • 2 Questions
1
Daniel Felipe Quiroga Cardozo
2
En el tema anterior se usó la ley de los senos para resolver el caso 1 (LAA o ALA) y el caso 2 (LLA) de un triángulo oblicuo. En esta ocasión se deriva la ley de los cosenos, y se usa para resolver los casos 3 y 4.
CASO 3: Se conocen dos lados y el ángulo incluido (LAL).
CASO 4: Se conocen tres lados (LLL).
3
El cuadrado de un lado de un triángulo es igual a la suma de los cuadrados de los otros dos lados menos el doble de su producto multiplicado por el coseno del ángulo incluido.
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5
Multiple Choice
Los valores de γ, α y b son respectivamente:
103.4°, 31.24° y 2.94
106.37°, 28.63° y 2.94
45°, 105,3° y 3,1
201.3°, 28.63° y 3,1
6
7
Fill in the Blanks
Los valores de α, β y γ son respectivamente:
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Daniel Felipe Quiroga Cardozo
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