In triangle ABC, angle 1 = 65 degrees angle 3 = 40 degrees find angle 2.
| June 23, 2021 | education
As you know, the sum of the angles of any triangle is 180 °.
In this case, in order to determine the value of the unknown angle, it is necessary to subtract the sum of two known angles from the sum of all angles.
Determine the sum of two known angles.
We sum up 65 ° and 40 °.
65 ° + 40 ° = 105 °
Find the value of the unknown angle.
180 ° – 105 ° = 75 °
Answer: The second angle is 75 °.
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