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As per your syllabus, the unit of PLANE ANGLE in SI is which?
ADegree (°)
BRadian (rad)
CSteradian (sr)
DGradian (gon)
Answer & Solution
Correct answer: B. Radian (rad)
Your syllabus + Fig 1.1: plane angle = arc/radius → rad.
Supplementary SI unit, dimensionless.
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