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Angles that are integral multiples of a right angle are called:

AObtuse ones
BQuadrantal
CAcute ones
DReflex ones
Answer & Solution
Correct answer: B. Quadrantal
1. These angles land the point P on one of the axes. 2. The points A, B, C and D mark them on the unit circle. 3. They are called quadrantal angles. _Source: syllabus Mathematics, Chapter 3, Trigonometric Functions._
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