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The angles of a triangle are in the ratio of 3 : 4 : 8. The triangle is1. obtuse angled2. right angled3. acute angled4. isosceles |
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Answer» Correct Answer - Option 1 : obtuse angled Given : Ratio of angles of triangle is 3 : 4 : 8 Concept used : Sum of all angles of a triangle is 180° Calculations : Let the values of angles be 3x, 4x and 8x 3x + 4x + 8x = 180° 15x = 180° ⇒ x = 12° 3x = 36° , 4x = 48° and 8x = 96° One of the angles is more than 90° ∴ The triangle will be obtuse |
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