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cosenos directores

es una presentacion matematica del significado de los cosenos

deisy caro

on 28 October 2012

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Transcript of cosenos directores

COSENOS DIRECTORES Se llaman Cosenos directores del vector a los cosenos de los ángulos que forman cada uno de los ejes coordenados. En un plano tridimensional se representan: EJEMPLO: COSENOS DIRECTORES Se identifican 3 ángulos en la imagen (Alpha, Beta, Gamma)
Y sus formulas para saber
el tamaño del ángulo son: Coseno de Alpha = Vector Ax / Modulo del vector |A| Coseno de Beta = Vector Ay / Modulo del vector
|A| Coseno de Gamma = Vector Az / Modulo del vector |A| Para saber el modulo
del vector A se
usa la formula: Mediante los cosenos directores determinar los angulos de , , Y del vector (4, 5, 3)
Paso 1. Se hace la grafica Paso 2. Se obtiene el modulo del
vector con la formula Paso 3. Sustituir el modulo del vector en la formula correspondiente a su eje. Paso 4. Representar
los ángulos en
la grafica.
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