Question

-4sen
$- 4sen {}^{2} (a) + 3 = 0$
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Answer 1

Respuesta:

a = 60º

Explicación paso a paso:

-4sen² (a)  + 3 = 0

-4sen² (a)  = -3

sen²(a) = -3/-4

sen²(a) = 3/4

sen (a) = √(3/4)

sen (a) = √3/2

a = sen⁻¹ √3/2

a = 60º