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a) 2*A + B = 2(70) + 25 = 140° + 25° = 165°
Complemento lo que le falta al angulo para ser igual a 90° y Suplemento lo que le falta al angulo para ser igual a 180°
b) 90° - 70° = 20°, Angulo complementario de A seria 20°
c) 180° - 25° = 155°, Angulo suplementario de B seria 155°
d) 3A - 5B: 3(70°) - 5(25°) = 210° - 125° = 85°
Te anexo las graficas en un archivo PDF
Segunda Parte
Recordemos que 180° = π Radianes
a) 80° Regla de 3
180° ===========> π Radianes
80° ============> X
X = [(π)(80°)]/[180°] = 80π/180 = 4π/9
80° = (4π/9) Radianes
b) 12π Radianes
Regla de 3
180° =========> π Radianes
X ===========> 12π Radianes
X = [(180°)(12π Radianes)]/[π Radianes]
X = 2160π/π = 2160°
12π Radianes = 2160°
c) 50°
Regla de 3:
180° =========> π Radianes
50° ==========> X
X = [(50°)(π Radianes)]/[180°]
X = 50π/180 = 5π/18
50° = 5π/18 Radianes
d) (2π/15) Radianes
Regla de 3
180° ===========> π Radianes
X =============> (2π/15) Radianes
X = [(180°)(2π/15) Radianes]/[π Radianes]
X = (180x2π)/(15π) = 360°/15 = 24°
(2π/15) Radianes = 24°