bmcphenmczyn
bmcphenmczyn bmcphenmczyn
  • 23-09-2016
  • Mathematics
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Solve on the interval 0 ≤ θ < 2π
Cos(2θ-π/2)=-1

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HomertheGenius
HomertheGenius HomertheGenius
  • 27-09-2016
cos ( 2 t - π/2 ) = - 1
2 t - π/2 = π
2 t = π + π/2
2 t = 3π/2
t = 3π/2  : 2
t = 3π/4 = 135°
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