ANILMUKHIYA ANILMUKHIYA
  • 04-02-2020
  • Mathematics
contestada


[tex]4 \cos {}^{2} \alpha = 1[/tex]
​

Respuesta :

PollyP52 PollyP52
  • 04-02-2020

Answer:

α = 60, 120, 240, 300    (0  =<  α  <= 360).

If you require a general solution in radians the answer is

α = π(n - 2/3) where n is an integer and

α = π(n - 4/3) where n is an integer.

Step-by-step explanation:

4 cos^2 α = 1

cos^2 α = 1/4

cos α = +/- 1/2

For angles  0  =<  α  <= 360

α = 60, 300, 120, 240.

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