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If √(x^2+ y^2) = et where t = sin^–1(y/√(x^2+y^2) ,then dy/dx is equal to

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 If  √(x2+ y2)  = et where t = sin–1(y/√(x2+y2) ,then dy/dx is equal to

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Correct Option :- (B) (C)

Explanation :- 

case-I : When tc x ≥ 0 

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