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4*sin(45-a)*sin(15+a)*cos(15-a)=cos(45-3*a) la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
4*sin(45 - a)*sin(15 + a)*cos(15 - a) = cos(45 - 3*a)
$$4 \sin{\left(45 - a \right)} \sin{\left(a + 15 \right)} \cos{\left(15 - a \right)} = \cos{\left(45 - 3 a \right)}$$
Gráfica
Respuesta numérica [src]
a1 = 10.2876110196153
a2 = 16.5707963267949
a3 = -36.8362787842316
a4 = -5.42035224833366
a5 = -58.8274273593601
a6 = -90.2433538952581
a7 = 25.9955742875643
a8 = -99.6681318560275
a9 = 22.8539816339745
a10 = 82.5442420521806
a11 = -21.1283155162826
a12 = 563.207918051419
a13 = -77.6769832808989
a14 = 85.6858347057703
a15 = 95.1106126665397
a16 = -1271.48219164502
a17 = 69.9778714378214
a18 = 4.00442571243572
a19 = 76.261056745001
a20 = 41.7035375555132
a21 = 57.4115008234622
a22 = -2.27875959474386
a23 = -17.9867228626928
a24 = -11.7035375555132
a25 = 19.7123889803847
a26 = 79.4026493985908
a27 = -52.5442420521806
a28 = 0.86283305884593
a29 = -49.4026493985908
a30 = 66.8362787842316
a31 = -30.553093477052
a32 = -71.3937979737193
a33 = 63.6946861306418
a34 = 38.5619449019234
a35 = 101.393797973719
a36 = 35.4203522483337
a37 = -96.5265392024377
a38 = 88.8274273593601
a39 = -83.9601685880785
a40 = -93.3849465488479
a41 = 91.9690200129499
a42 = 107.676983280899
a43 = 51.1283155162826
a44 = -61.9690200129499
a45 = -14.845130209103
a46 = 98.2522053201295
a47 = 44.845130209103
a48 = -33.6946861306418
a49 = -43.1194640914112
a50 = -74.5353906273091
a51 = -80.8185759344887
a52 = -68.2522053201295
a53 = -65.1106126665397
a54 = 54.2699081698724
a55 = -87.1017612416683
a56 = -24.2699081698724
a57 = 7.14601836602552
a58 = 29.1371669411541
a59 = -27.4115008234622
a60 = 13.4292036732051
a61 = -46.261056745001
a62 = 32.2787595947439
a63 = -39.9778714378214
a64 = 60.553093477052
a65 = 73.1194640914112
a66 = -55.6858347057703
a67 = -8.56194490192345
a68 = 47.9867228626928
a68 = 47.9867228626928