Determine the type of triangle ABC, in which the angle A = 39 degrees, the angle B = 42 degrees.
| March 11, 2021 | education
The sum of the angles of the triangle is 180. Determine the value of the angle ACB. ACB = 180 – CAB – CBA = 180 – 39 – 42 = 109.
AСВ> 90. The ABC triangle is obtuse.
Answer: Obtuse.
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