# Lecture 11 Application of Derivatives P11

The secret of success in life is for a man to be ready for his opportunity when it comes. – Benjamin Disraeli

# Part - 11 Lecture - 11 Chapter 6 Application of Derivatives

Topics discussed in this lecture:

In this lecture I am discussing word problems in chapter 6 Applications of derivatives based on Local Maxima and Local Minima.

 NCERT EXERCISE 6.5

Question discussed in this lecture

Question 25. Show that the semi-vertical angle of the cone of the maximum volume and of given slant height is $\tan^{-1} \sqrt{2}$.

Question 26. Show that semi-vertical angle of right circular cone of given surface area and maximum volume is $\sin^{-1} \left( \frac{1}{3} \right)$.