Sir, why you have taken here ,
dx × (r/cosx) = dl cosx
6 years ago
by
Amit Vikram Raj
Ans
1
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because dl cosx is the arc length... according to the derivation the arc length is Ro cos x which is R/cosx dx
6 years ago
by
ABHISHEK SHANKAR
Ans
2
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sorry Ro dx is the arc length which is R/cosx dx
6 years ago
by
ABHISHEK SHANKAR