Find the unknown angles of a triangle if one angle is 70 degrees and the other 40.

The unidentified third angle of the triangle is determined using the conditional variable “Y”.

Considering that the sum of the 3 angles of the triangle is 180 °, and applying the example data, we get the following expression: Y + 70 + 40 = 180.

Solving the composed expression, we get the following result Y + 110 = 180 or Y = 180 – 110 = 70 °.

Answer: 70 °.



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