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4-35.

Halla el valor de .

  1. Triangle labeled as follows: bottom side, x, left side, 27, top angle, 30 degrees, bottom right angle, 40 degrees.

    Usa la ley de los senos.

  1. Triangle labeled as follows: bottom side, x, left side, 81, left bottom angle, 27 degrees, right bottom angle, 39 degrees.

    Mira la parte (a).