Given the inequality:
$$\left|{\sin{\left(x \right)}}\right| \leq 0$$
To solve this inequality, we must first solve the corresponding equation:
$$\left|{\sin{\left(x \right)}}\right| = 0$$
Solve:
Given the equation
$$\left|{\sin{\left(x \right)}}\right| = 0$$
transform
$$\left|{\sin{\left(x \right)}}\right| - 1 = 0$$
$$\left|{\sin{\left(x \right)}}\right| - 1 = 0$$
Do replacement
$$w = \left|{\sin{\left(x \right)}}\right|$$
Move free summands (without w)
from left part to right part, we given:
$$w = 1$$
We get the answer: w = 1
do backward replacement
$$\left|{\sin{\left(x \right)}}\right| = w$$
substitute w:
$$x_{1} = 12.5663706143592$$
$$x_{2} = 53.4070751110265$$
$$x_{3} = -97.3893722612836$$
$$x_{4} = 37.6991118430775$$
$$x_{5} = 97.3893722612836$$
$$x_{6} = 78.5398163397448$$
$$x_{7} = -59.6902604182061$$
$$x_{8} = -65.9734457253857$$
$$x_{9} = 0$$
$$x_{10} = -31.4159265358979$$
$$x_{11} = -50.2654824574367$$
$$x_{12} = -21.9911485751286$$
$$x_{13} = 6.28318530717959$$
$$x_{14} = -34.5575191894877$$
$$x_{15} = -94.2477796076938$$
$$x_{16} = -69.1150383789755$$
$$x_{17} = -15.707963267949$$
$$x_{18} = 21.9911485751286$$
$$x_{19} = 62.8318530717959$$
$$x_{20} = 50.2654824574367$$
$$x_{21} = 81.6814089933346$$
$$x_{22} = 100.530964914873$$
$$x_{23} = -87.9645943005142$$
$$x_{24} = 9.42477796076938$$
$$x_{25} = 34.5575191894877$$
$$x_{26} = -3760.48640634698$$
$$x_{27} = 65.9734457253857$$
$$x_{28} = -28.2743338823081$$
$$x_{29} = 650.309679293087$$
$$x_{30} = -427.256600888212$$
$$x_{31} = -56.5486677646163$$
$$x_{32} = -53.4070751110265$$
$$x_{33} = -37.6991118430775$$
$$x_{34} = -25.1327412287183$$
$$x_{35} = -100.530964914873$$
$$x_{36} = -9.42477796076938$$
$$x_{37} = 40.8407044966673$$
$$x_{38} = -91.106186954104$$
$$x_{39} = -75.398223686155$$
$$x_{40} = 18.8495559215388$$
$$x_{41} = 59.6902604182061$$
$$x_{42} = -6.28318530717959$$
$$x_{43} = 28.2743338823081$$
$$x_{44} = 56.5486677646163$$
$$x_{45} = -43.9822971502571$$
$$x_{46} = -47.1238898038469$$
$$x_{47} = -3.14159265358979$$
$$x_{48} = 31.4159265358979$$
$$x_{49} = 94.2477796076938$$
$$x_{50} = -12.5663706143592$$
$$x_{51} = 75.398223686155$$
$$x_{52} = -285.884931476671$$
$$x_{53} = -72.2566310325652$$
$$x_{54} = 84.8230016469244$$
$$x_{55} = 72.2566310325652$$
$$x_{56} = -81.6814089933346$$
$$x_{57} = 43.9822971502571$$
$$x_{58} = -78.5398163397448$$
$$x_{59} = 15.707963267949$$
$$x_{60} = 87.9645943005142$$
$$x_{1} = 12.5663706143592$$
$$x_{2} = 53.4070751110265$$
$$x_{3} = -97.3893722612836$$
$$x_{4} = 37.6991118430775$$
$$x_{5} = 97.3893722612836$$
$$x_{6} = 78.5398163397448$$
$$x_{7} = -59.6902604182061$$
$$x_{8} = -65.9734457253857$$
$$x_{9} = 0$$
$$x_{10} = -31.4159265358979$$
$$x_{11} = -50.2654824574367$$
$$x_{12} = -21.9911485751286$$
$$x_{13} = 6.28318530717959$$
$$x_{14} = -34.5575191894877$$
$$x_{15} = -94.2477796076938$$
$$x_{16} = -69.1150383789755$$
$$x_{17} = -15.707963267949$$
$$x_{18} = 21.9911485751286$$
$$x_{19} = 62.8318530717959$$
$$x_{20} = 50.2654824574367$$
$$x_{21} = 81.6814089933346$$
$$x_{22} = 100.530964914873$$
$$x_{23} = -87.9645943005142$$
$$x_{24} = 9.42477796076938$$
$$x_{25} = 34.5575191894877$$
$$x_{26} = -3760.48640634698$$
$$x_{27} = 65.9734457253857$$
$$x_{28} = -28.2743338823081$$
$$x_{29} = 650.309679293087$$
$$x_{30} = -427.256600888212$$
$$x_{31} = -56.5486677646163$$
$$x_{32} = -53.4070751110265$$
$$x_{33} = -37.6991118430775$$
$$x_{34} = -25.1327412287183$$
$$x_{35} = -100.530964914873$$
$$x_{36} = -9.42477796076938$$
$$x_{37} = 40.8407044966673$$
$$x_{38} = -91.106186954104$$
$$x_{39} = -75.398223686155$$
$$x_{40} = 18.8495559215388$$
$$x_{41} = 59.6902604182061$$
$$x_{42} = -6.28318530717959$$
$$x_{43} = 28.2743338823081$$
$$x_{44} = 56.5486677646163$$
$$x_{45} = -43.9822971502571$$
$$x_{46} = -47.1238898038469$$
$$x_{47} = -3.14159265358979$$
$$x_{48} = 31.4159265358979$$
$$x_{49} = 94.2477796076938$$
$$x_{50} = -12.5663706143592$$
$$x_{51} = 75.398223686155$$
$$x_{52} = -285.884931476671$$
$$x_{53} = -72.2566310325652$$
$$x_{54} = 84.8230016469244$$
$$x_{55} = 72.2566310325652$$
$$x_{56} = -81.6814089933346$$
$$x_{57} = 43.9822971502571$$
$$x_{58} = -78.5398163397448$$
$$x_{59} = 15.707963267949$$
$$x_{60} = 87.9645943005142$$
This roots
$$x_{26} = -3760.48640634698$$
$$x_{30} = -427.256600888212$$
$$x_{52} = -285.884931476671$$
$$x_{35} = -100.530964914873$$
$$x_{3} = -97.3893722612836$$
$$x_{15} = -94.2477796076938$$
$$x_{38} = -91.106186954104$$
$$x_{23} = -87.9645943005142$$
$$x_{56} = -81.6814089933346$$
$$x_{58} = -78.5398163397448$$
$$x_{39} = -75.398223686155$$
$$x_{53} = -72.2566310325652$$
$$x_{16} = -69.1150383789755$$
$$x_{8} = -65.9734457253857$$
$$x_{7} = -59.6902604182061$$
$$x_{31} = -56.5486677646163$$
$$x_{32} = -53.4070751110265$$
$$x_{11} = -50.2654824574367$$
$$x_{46} = -47.1238898038469$$
$$x_{45} = -43.9822971502571$$
$$x_{33} = -37.6991118430775$$
$$x_{14} = -34.5575191894877$$
$$x_{10} = -31.4159265358979$$
$$x_{28} = -28.2743338823081$$
$$x_{34} = -25.1327412287183$$
$$x_{12} = -21.9911485751286$$
$$x_{17} = -15.707963267949$$
$$x_{50} = -12.5663706143592$$
$$x_{36} = -9.42477796076938$$
$$x_{42} = -6.28318530717959$$
$$x_{47} = -3.14159265358979$$
$$x_{9} = 0$$
$$x_{13} = 6.28318530717959$$
$$x_{24} = 9.42477796076938$$
$$x_{1} = 12.5663706143592$$
$$x_{59} = 15.707963267949$$
$$x_{40} = 18.8495559215388$$
$$x_{18} = 21.9911485751286$$
$$x_{43} = 28.2743338823081$$
$$x_{48} = 31.4159265358979$$
$$x_{25} = 34.5575191894877$$
$$x_{4} = 37.6991118430775$$
$$x_{37} = 40.8407044966673$$
$$x_{57} = 43.9822971502571$$
$$x_{20} = 50.2654824574367$$
$$x_{2} = 53.4070751110265$$
$$x_{44} = 56.5486677646163$$
$$x_{41} = 59.6902604182061$$
$$x_{19} = 62.8318530717959$$
$$x_{27} = 65.9734457253857$$
$$x_{55} = 72.2566310325652$$
$$x_{51} = 75.398223686155$$
$$x_{6} = 78.5398163397448$$
$$x_{21} = 81.6814089933346$$
$$x_{54} = 84.8230016469244$$
$$x_{60} = 87.9645943005142$$
$$x_{49} = 94.2477796076938$$
$$x_{5} = 97.3893722612836$$
$$x_{22} = 100.530964914873$$
$$x_{29} = 650.309679293087$$
is the points with change the sign of the inequality expression.
First define with the sign to the leftmost point:
$$x_{0} \leq x_{26}$$
For example, let's take the point
$$x_{0} = x_{26} - \frac{1}{10}$$
=
$$-3760.48640634698 + - \frac{1}{10}$$
=
$$-3760.58640634698$$
substitute to the expression
$$\left|{\sin{\left(x \right)}}\right| \leq 0$$
$$\left|{\sin{\left(-3760.58640634698 \right)}}\right| \leq 0$$
0.0998334166469064 <= 0
but
0.0998334166469064 >= 0
Then
$$x \leq -3760.48640634698$$
no execute
one of the solutions of our inequality is:
$$x \geq -3760.48640634698 \wedge x \leq -427.256600888212$$
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x26 x30 x52 x35 x3 x15 x38 x23 x56 x58 x39 x53 x16 x8 x7 x31 x32 x11 x46 x45 x33 x14 x10 x28 x34 x12 x17 x50 x36 x42 x47 x9 x13 x24 x1 x59 x40 x18 x43 x48 x25 x4 x37 x57 x20 x2 x44 x41 x19 x27 x55 x51 x6 x21 x54 x60 x49 x5 x22 x29Other solutions will get with the changeover to the next point
etc.
The answer:
$$x \geq -3760.48640634698 \wedge x \leq -427.256600888212$$
$$x \geq -285.884931476671 \wedge x \leq -100.530964914873$$
$$x \geq -97.3893722612836 \wedge x \leq -94.2477796076938$$
$$x \geq -91.106186954104 \wedge x \leq -87.9645943005142$$
$$x \geq -81.6814089933346 \wedge x \leq -78.5398163397448$$
$$x \geq -75.398223686155 \wedge x \leq -72.2566310325652$$
$$x \geq -69.1150383789755 \wedge x \leq -65.9734457253857$$
$$x \geq -59.6902604182061 \wedge x \leq -56.5486677646163$$
$$x \geq -53.4070751110265 \wedge x \leq -50.2654824574367$$
$$x \geq -47.1238898038469 \wedge x \leq -43.9822971502571$$
$$x \geq -37.6991118430775 \wedge x \leq -34.5575191894877$$
$$x \geq -31.4159265358979 \wedge x \leq -28.2743338823081$$
$$x \geq -25.1327412287183 \wedge x \leq -21.9911485751286$$
$$x \geq -15.707963267949 \wedge x \leq -12.5663706143592$$
$$x \geq -9.42477796076938 \wedge x \leq -6.28318530717959$$
$$x \geq -3.14159265358979 \wedge x \leq 0$$
$$x \geq 6.28318530717959 \wedge x \leq 9.42477796076938$$
$$x \geq 12.5663706143592 \wedge x \leq 15.707963267949$$
$$x \geq 18.8495559215388 \wedge x \leq 21.9911485751286$$
$$x \geq 28.2743338823081 \wedge x \leq 31.4159265358979$$
$$x \geq 34.5575191894877 \wedge x \leq 37.6991118430775$$
$$x \geq 40.8407044966673 \wedge x \leq 43.9822971502571$$
$$x \geq 50.2654824574367 \wedge x \leq 53.4070751110265$$
$$x \geq 56.5486677646163 \wedge x \leq 59.6902604182061$$
$$x \geq 62.8318530717959 \wedge x \leq 65.9734457253857$$
$$x \geq 72.2566310325652 \wedge x \leq 75.398223686155$$
$$x \geq 78.5398163397448 \wedge x \leq 81.6814089933346$$
$$x \geq 84.8230016469244 \wedge x \leq 87.9645943005142$$
$$x \geq 94.2477796076938 \wedge x \leq 97.3893722612836$$
$$x \geq 100.530964914873 \wedge x \leq 650.309679293087$$