How Do I Resolve The Following Trigonometric Equation?
(X is a is alpha multiplication)
thing cos 2XA + 2xcos2a = 0
would cos alpha cos two alpha (ie, double angle) plus the square 2cos alpha equal to zero.
Thanks
Home › Mathematics › How Do I Resolve The Following Trigonometric Equation?
(a es alfa y x es multiplicación)
cosa x cos 2xa + 2xcos2a = 0
sería coseno de alfa por coseno de dos alfa (es decir, ángulo doble) más 2cos al cuadrado alfa igual a zero.
Gracias
-Anonymous
cosa x cos 2xa + 2xcos2a = 0
sería coseno de alfa por coseno de dos alfa (es decir, ángulo doble) más 2cos al cuadrado alfa igual a zero.
Gracias
cosa ( cos 2a) + 2cos2a=0
se factoriza cos 2a
cos2a(cos a +2)=0
cada factor se iguala a cero
cos 2a=0
2a=cos^-1(0)
2a=90°
a=90°/2=45°
cos a +2=0
cos a =-2
a= cos^-1(-2)
no tiene solución
ylisto
-Anonymous
se factoriza cos 2a
cos2a(cos a +2)=0
cada factor se iguala a cero
cos 2a=0
2a=cos^-1(0)
2a=90°
a=90°/2=45°
cos a +2=0
cos a =-2
a= cos^-1(-2)
no tiene solución
ylisto
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