El profesor se sorprenderá mucho al ver tu solución correcta😉
___ cos(x) = 2*\/ 3 *sin(x)
Dividamos ambos miembros de la ecuación en -2*sqrt(3)
suma
/ ___\ |\/ 3 | atan|-----| \ 6 /
=
/ ___\ |\/ 3 | atan|-----| \ 6 /
producto
/ ___\ |\/ 3 | atan|-----| \ 6 /
=
/ ___\ |\/ 3 | atan|-----| \ 6 /
atan(sqrt(3)/6)
/ ___\ |\/ 3 | x1 = atan|-----| \ 6 /
x1 = atan(sqrt(3)/6)
x1 = -40.5596695951645
x2 = -59.4092255167033
x3 = -100.249930013371
x4 = -49.9844475559339
x5 = 107.095185123556
x6 = 69.3960732804783
x7 = 53.6881100125293
x8 = 138.511111659454
x9 = 59.9712953197089
x10 = 72.5376659340681
x11 = -27.9932989808053
x12 = -31.1348916343951
x13 = 28.555368783811
x14 = -46.8428549023441
x15 = 78.8208512412476
x16 = -18.5685210200359
x17 = 9.70581286227219
x18 = 100.811999816376
x19 = -9.14374305926657
x20 = 37.9801467445803
x21 = -34.2764842879849
x22 = 0.281034901502814
x23 = -43.7012622487543
x24 = 97.6704071627864
x25 = 6.5642202086824
x26 = -6.00215040567677
x27 = -122.241078588499
x28 = -24.8517063272155
x29 = 44.2633320517599
x30 = 3.42262755509261
x31 = 15.9889981694518
x32 = -65.6924108238828
x33 = 34.8385540909905
x34 = -62.550818170293
x35 = -37.4180769415747
x36 = 19.1305908230416
x37 = 31.6969614374007
x38 = -15.4269283664462
x39 = 91.3872218556068
x40 = -90.8251520526012
x41 = 85.1040365484272
x42 = -75.1171887846522
x43 = 41.1217393981701
x44 = -93.966744706191
x45 = 12.847405515862
x46 = -71.9755961310624
x47 = 25.4137761302212
x48 = -2.86055775208698
x49 = 66.2544806268885
x50 = -81.4003740918318
x51 = 81.9624438948374
x52 = 63.1128879732987
x53 = -53.1260402095237
x54 = -84.5419667454216
x55 = -78.258781438242
x56 = 47.4049247053497
x57 = 75.6792585876579
x58 = 22.2721834766314
x59 = -56.2676328631135
x60 = -21.7101136736257
x61 = 50.5465173589395
x62 = 56.8297026661191
x63 = -12.2853357128564
x64 = -68.8340034774726
x65 = 94.5288145091966
x66 = -97.1083373597808
x67 = -87.6835593990114
x68 = 88.245629202017
x68 = 88.245629202017