Question

K = sen (30° + X) + sen (30° – X)
sen x

Answer 1

Respuesta:

K = ctg(x)

Respuesta C

Explicación paso a paso:

K = (sen (30° + x) + sen (30° – x)) / sen(x)

K = (sen(30º)cos(x) + sen(x)cos(30º) + sen(30º)cos(x) - sen(x)cos(30º)) / sen(x)

K = 2sen(30º)cos(x)/sen(x)

K = 2sen(30º)ctg(x)

K = 2(1/2)ctg(x)

K = ctg(x)