ltsoai584 ltsoai584
  • 20-03-2021
  • Mathematics
contestada

if cos 25°=K , determine cos50°​

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Аноним Аноним
  • 20-03-2021

Answer:

cos 50⁰ = cos 2.25⁰ = 2cos²25⁰ - 1 = 2K² - 1

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