## Find the value of tan9° – tan27° – tan63° + tan81°

NCERT Exemplar Class 11 Maths Chapter 3 Trigonometry Functions Example 5: Find the value of tan9° – tan27° – tan63° + tan81° tan9°–tan27° – tan63° + tan81°

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## Prove that (sec8θ−1)/(sec4θ−1)=tan8θ/tan2θ

Topics/Questions discussed in this video: NCERT Exemplar Class 11 Maths Chapter 3 Trigonometry Functions Example 6: Prove that $\frac{sec8\theta-1}{sec4\theta-1}=\frac{tan8\theta}{tan2\theta}$

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## (Part – 1) Exercise 2.1 Chapter 2 Relations and Functions

Topics/Questions discussed in this video: 00:00:01 Introduction to this lecture 00:00:30 Why Relations And Functions is important for Class 12 Maths 00:02:06 Practical Example related to Cartesian Product 00:06:16 Cartesian Product and Ordered Pairs NCERT Exercise 2.1...

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## (Part – 2) Exercise 2.1 Chapter 2 Relations and Functions

Topics/Questions discussed in this video: 00:00:01 Introduction to this lecture 00:00:30 Why Relations And Functions is important for Class 12 Maths 00:02:06 Practical Example related to Cartesian Product 00:06:16 Cartesian Product and Ordered Pairs NCERT Exercise 2.1...

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## Exercise 11.1 Chapter 11 Conic Sections Class 11 Maths

Topics/Questions discussed in this video: In this lecture I have discussed ncert solutions for Exercise 11.1 of Chapter 11 Conic Sections Class 11 Maths. 00:00:05 How to study Conic Sections in Class 11 00:05:31 Introduction to Circle, Parabola, Ellipse and Hyperbola...

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## Exercise 3.1 Chapter 3 Trigonometric Functions Class 11 Maths

Topics/Questions discussed in this video: 00:21:17 Meaning and origin of Word Trigonometry 00:24:47 Basics of Angles: Positive angles, negative angles, vertex with animations 00:34:57 Measuring an angle00:36:07 Basics of Degree measure, minutes and seconds 00:40:57...

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