Respuesta :

sqdancefan

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Answer:

  t = 4°

Step-by-step explanation:

As in any triangle, the sum of angles is 180°.

  17t + 16t + 12t = 180°

  45t = 180° . . . . . collect terms

  t = (180/45)° . . . . divide by the coefficient of t

  t = 4°

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