ltsoai584
ltsoai584
20-03-2021
Mathematics
contestada
if cos 25°=K , determine cos50°
Respuesta :
Аноним
Аноним
20-03-2021
Answer:
cos 50⁰ = cos 2.25⁰ = 2cos²25⁰ - 1 =
2K² - 1
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