ma7ribreetycas7 ma7ribreetycas7
  • 19-11-2016
  • Mathematics
contestada

Find all values of θ in the interval 0° ≤ θ < 360° that satisfy the equation sin 2θ = sin θ.

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nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 21-11-2016
sin 2θ = sin θ
2sin θ cos θ = sin θ
2cos θ = 1
cos θ = 1/2
θ = arccos(1/2) = 60° and 300°
θ = 60° and 300°
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