alleryTrigonometric functions are studied using a unit circle centred at the:
AOrigin
BOutline
COpening
DOverlap
Answer & Solution
Correct answer: A. Origin
1. Coordinates are simplest when the circle is centred conveniently.
2. The reference point of the axes is that place.
3. Consider a unit circle with centre at origin of the coordinate axes.
4. So the answer is the origin.
_Source: syllabus Mathematics, Ch 3 'Trigonometric Functions'_
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