alleryA rapidly spinning wheel can be described as making an angle in units of:
AReflections
BRefractions
CRecursions
DRevolutions
Answer & Solution
Correct answer: D. Revolutions
1. The example predates introducing degrees and radians.
2. It counts whole turns per second.
3. A rapidly spinning wheel is making an angle of say 15 revolution per second.
4. So the answer is revolutions.
_Source: syllabus Mathematics, Ch 3 'Trigonometric Functions'_
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