Maths. Section B1Applications of Derivatives

For a curve frac(text Length of normal )^2(text Length of tangent )^2…

For a curve $\frac{(\text { Length of normal })^2}{(\text { Length of tangent })^2}$ is equal to

Answer & explanation

Correct answer: option 1

We have,

$\frac{(\text { Length of normal })^2}{(\text { Length of tangent })^2}=\left(\frac{d y}{d x}\right)^2$

$\Rightarrow \frac{(\text { Length of normal })^2}{(\text { Length of tangent })^2}=\frac{\text { Sub normal }}{\text { Sub tangent }}$