The sum of complementary angles is 90 degrees, hence we can conclude that the sum of the two acute angles are complementary
First, we must understand that the sum of the interior angle of a triangle is 180 degrees.
If the triangle is right angled, hence;
x + y + 90 = 180
The angles x and y are the other two acute angles of the triangle.
From the expression above,
x + y = 180 - 90
x + y = 90
Since the sum of complementary angles is 90 degrees, hence we can conclude that the sum of the two acute angles are complementary
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