Given a right triangle with one 30° angle. It follows that the other angle is 55°.
A) Inductive, cogent.
B) Deductive, valid.
C) Inductive, strong.
D) Deductive, invalid.
E) Inductive, weak

Question

Quizplus · Accepted Answer

In a right triangle, the sum of the angles must be 180°. Given one angle is 30° and it's a right triangle, the other angle must be 60° (since one angle is already 90°). The statement is deductive because it follows a specific rule (sum of angles in a triangle), but it is invalid because it incorrectly concludes the other angle is 55°.

Given a Right Triangle with One 30° Angle