Q 7) Is this a valid argument? Given: If the sum of the measure of two angles equals 90° , then the angles are

complementary

The sum of the measures of /A and B is 90°

Conclusion:/ A and ZB are complementary,

1.Yes. This argument uses the Law of Detachment.

2.No. This is an improper use of the Law of Detachment.

3.Yes. This argument uses the Law of Syllogism.

4.No. This is an improper use of the Law of Syllogism.