In the following sets, which set represents the angles of a triangle?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. {30°,60°,90°}.
The sum of the three angles of a triangle is 180°.
In option (1), 30° + 60° + 90° = 180°
In option (2), 80° + 50° + 90° = 220°
In option (3), 30° + 50° + 110° = 190°
In option (4), 30° + 50° + 90° = 170°
Here, the sum of three angles is 180° in option 1.
Therefore, the correct data set is {30°,60°,90°}