Given: If the sum of the measure of two angles equals 90then the angles are complementary. The sum of the measures of angle A and angle B; 90 degrees; usion: angle A and angle B are complementary . O This is an improper use of the Law of Detachment. Yes . This argument uses the Law of Syllogism. No. This is an improper use of the Law of Syllogism . Yes. This argument uses the Law of Detachment .