Question:
What is radian
Answer:
1 radian is the Angle subtended at centre by arc of length 1 unit in a circle of radius 1 unit.
One revolution = 2π radian.
For more information click on link : timestamp: 09:05
https://www.youtube.com/watch?v=HdB63fiud6I&list=PLCzaIJYXP5YdD-nMkUNAKq3PAeBDVV23S&index=18&t=1675s
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