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13. Two angles of a triangle are equal and third angle is greater than each of these angles by 30 . Find all the angles of the triangle.

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look varsha,


let the two equal angles of the triangle be x

x + x + 30 = 180 ( angle sum property of triangle )
2x + 30 = 180
2x= 180-30
2x = 150
x = 150/2
= 75
so, angles of the triangle are 75, 75 and 30
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30 degree
 
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because in the triangle, if one angle is 90 then other angles are smaller or equal than that.
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