（157.05-c）×8.22=（161.9-c）×8.03
    （157.05-x）×8.22=（161.9-x）×8.03
     18X=5.4
    (x/(20)+x/(30))*4=10
    (x/(25)+x/(35))*3=5
    sinx*sin40=sin(80-x)*sin100
    3.5944055944055946*143+4.0*2=(143+2)*x
    3.5944055944055946*143+4.0*2+4*1+3.3*2=(143+2+1+2)*x
    3.5944*143+4.0*2+4*1+3.3*2=(143+2+1+2)*x
    3.5944*143+0.3*2+4.0*2+4*1+3.4*2=(143+2+1+2)*x
    3.5944*143+4.0*2+4*2+3.4*2=(143+2+2+2)*x
    3.5944*143+4.0*2+4*1+3.5*2=(143+2+1+2)*x
    3.5944*143+4.0*2+4*1+3.4*2=(143+2+1+2)*x
    3.5944*143+4.0*2=(143+2)*x
    3.5944055944055946 *143+4.0*2=(143+2)*x
    3.5944055*143+4.0*2=(143+2)*x
    103.5x+103.5x^2=162.755
    1-a/(1.66+a)+1/6.28318530718sin(6.28318530718a/(1.66+a)) = 1/(2*2.1651)
    1-a/(1.66+a)+1/6.28318530718sin(6.28318530718a/(1.66+a)) = 1/(2*2.165)
    1-a/(1.66+a)+1/6.28318530718sin(6.28318530718a/(1.66+a)) = 1/(2*1.7131)

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