sen²x = 1/4
senx = √(1/4)
senx = +ou- 1/2
Solução :
x = 30° , 180° - 30°, 180° + 30° , 360° - 30°
x = 30°, 150°, 210° , 330°
x = π/6 , 5π/6 , 7π/6 ,11π/6
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sen²x = 1/4
senx = √(1/4)
senx = +ou- 1/2
Solução :
x = 30° , 180° - 30°, 180° + 30° , 360° - 30°
x = 30°, 150°, 210° , 330°
x = π/6 , 5π/6 , 7π/6 ,11π/6
senx = √(1/4)
senx = +ou- 1/2
Solução :
x = 30° , 180° - 30°, 180° + 30° , 360° - 30°
x = 30°, 150°, 210° , 330°
x = π/6 , 5π/6 , 7π/6 ,11π/6