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cos(x)=(4/5)

cos(x)=(4/5) la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
cos(x) = 4/5
$$\cos{\left(x \right)} = \frac{4}{5}$$
Solución detallada
Tenemos la ecuación
$$\cos{\left(x \right)} = \frac{4}{5}$$
es la ecuación trigonométrica más simple
Esta ecuación se reorganiza en
$$x = \pi n + \operatorname{acos}{\left(\frac{4}{5} \right)}$$
$$x = \pi n - \pi + \operatorname{acos}{\left(\frac{4}{5} \right)}$$
O
$$x = \pi n + \operatorname{acos}{\left(\frac{4}{5} \right)}$$
$$x = \pi n - \pi + \operatorname{acos}{\left(\frac{4}{5} \right)}$$
, donde n es cualquier número entero
Gráfica
Respuesta rápida [src]
x1 = -acos(4/5) + 2*pi
$$x_{1} = - \operatorname{acos}{\left(\frac{4}{5} \right)} + 2 \pi$$
x2 = acos(4/5)
$$x_{2} = \operatorname{acos}{\left(\frac{4}{5} \right)}$$
x2 = acos(4/5)
Suma y producto de raíces [src]
suma
-acos(4/5) + 2*pi + acos(4/5)
$$\operatorname{acos}{\left(\frac{4}{5} \right)} + \left(- \operatorname{acos}{\left(\frac{4}{5} \right)} + 2 \pi\right)$$
=
2*pi
$$2 \pi$$
producto
(-acos(4/5) + 2*pi)*acos(4/5)
$$\left(- \operatorname{acos}{\left(\frac{4}{5} \right)} + 2 \pi\right) \operatorname{acos}{\left(\frac{4}{5} \right)}$$
=
(-acos(4/5) + 2*pi)*acos(4/5)
$$\left(- \operatorname{acos}{\left(\frac{4}{5} \right)} + 2 \pi\right) \operatorname{acos}{\left(\frac{4}{5} \right)}$$
(-acos(4/5) + 2*pi)*acos(4/5)
Respuesta numérica [src]
x1 = -50.90898356623
x2 = 44.6257982590504
x3 = 43.3387960414638
x4 = 94.8912807164871
x5 = -99.8874638060801
x6 = 82.3249101021279
x7 = -55.905166655823
x8 = 13.2098717231525
x9 = -88.6080954093075
x10 = -6.92668641597287
x11 = -74.7547225773617
x12 = -63.4753541805892
x13 = -82.3249101021279
x14 = -12486222.9460819
x15 = 24.4892401199251
x16 = -69.7585394877687
x17 = 37.0556107342842
x18 = 50.90898356623
x19 = 38.3426129518708
x20 = -32.0594276446912
x21 = -13.2098717231525
x22 = -68.4715372701822
x23 = 93.6042784989005
x24 = 0.643501108793284
x25 = 63.4753541805892
x26 = 99.8874638060801
x27 = 18.2060548127455
x28 = -62.1883519630026
x29 = 74.7547225773617
x30 = -18.2060548127455
x31 = -19.493057030332
x32 = 6.92668641597287
x33 = 87.3210931917209
x34 = -24.4892401199251
x35 = -44.6257982590504
x36 = -57.1921688734096
x37 = 68.4715372701822
x38 = 62.1883519630026
x39 = -5.6396841983863
x40 = -101.174466023667
x41 = 81.0379078845413
x42 = 25.7762423375116
x43 = -43.3387960414638
x44 = -81.0379078845413
x45 = 19.493057030332
x46 = -87.3210931917209
x47 = 55.905166655823
x48 = -30.7724254271046
x49 = 88.6080954093075
x50 = 69.7585394877687
x51 = 30.7724254271046
x52 = -38.3426129518708
x53 = -49.6219813486434
x54 = 5.6396841983863
x55 = -0.643501108793284
x56 = -93.6042784989005
x57 = -94.8912807164871
x58 = 57.1921688734096
x59 = -76.0417247949483
x60 = -3210.06419085998
x61 = 3550.64319966526
x62 = -11.9228695055659
x63 = -25.7762423375116
x64 = 11.9228695055659
x65 = 49.6219813486434
x66 = -37.0556107342842
x67 = 76.0417247949483
x68 = 32.0594276446912
x68 = 32.0594276446912
Gráfico
cos(x)=(4/5) la ecuación