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# What happens if you try to use l'Hospital's Rule to find the limit? Evaluate the limit using another method.$\displaystyle \lim_{x\to (\pi /2)^-} \frac{\sec x}{\tan x}$

## 1

Derivatives

Differentiation

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##### Kristen K.

University of Michigan - Ann Arbor

##### Samuel H.

University of Nottingham

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### Video Transcript

Okay. Take the drug dream of the top derivative of seeking access. 10 are seeking acts. The river of the bottom is seeking squared Max. The supplies to be chant acts over seeking abs. However, now we're not really any farther than we were when we started in the sense that now have to basically apply. Well, hospitals will again. So we're taking the driver of the top. You got the director of the bottom. And now we're just right back where we started with seeking X over tangent. So now what we should do is we should get rid off the secret and tangent and write it in terms of signing co sign So one over coastline acts over. Sign axe over co sign ups. This gives us one over. Sign us those signing Khosa. Cancel. This gives us one is our solution. When you plug in

#### Topics

Derivatives

Differentiation

Volume

##### Kristen K.

University of Michigan - Ann Arbor

##### Samuel H.

University of Nottingham

Lectures

Join Bootcamp