Topics/Questions discussed in this video: NCERT Exemplar Class 11 Maths Chapter 3 Trigonometry Functions Example 5: Find the value of [latex]\tan 9° – \tan 27° – \tan 63° + \tan 81°[/latex]

## 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 [latex]\frac{sec8\theta-1}{sec4\theta-1}=\frac{tan8\theta}{tan2\theta}[/latex]

## NCERT Miscellaneous Exercise Solutions Chapter 2 Inverse Trigonometric Functions

Topics/Questions discussed in this video: NCERT Miscellaneous Exercise Class 12 Maths Chapter 2 Inverse Trigonometric Functions Question-1. [latex]\cos^{-1}\cos\frac{13\pi}{6} [/latex] Question-2. [latex]\tan^{-1}\tan\frac{7\pi}{6} [/latex] Question-3. [latex]2...

## L1 – Basics of Units and Measurements – Physical Quantities SI Units

Topics/Questions discussed in this video: Physical Quantities and SI Units Download PDF of Notes

## L2 – Basics of Angles Units and Measurements

Topics/Questions discussed in this video: In this lecture I am discussing the Basics of Angles, Basics of Radian, Conversation Between Degree and Radian of Chapter 2 Units and Measurements Class 11 Physics For IIT Jee Mains/Neet having explanations from basic...

## L3 – Parallax Method Units and Measurements

Topics/Questions discussed in this video: Example 2.2 A man wishes to estimate the distance of a nearby tower from him. He stands at a point A in front of the tower C and spots a very distant object O in line with AC. He then walks perpendicular to AC up to B, a...

## L4 – Measurement Errors – Units and Measurements

Topics/Questions discussed in this video: Example 2.7 We measure the period of oscillation of a simple pendulum. In successive measurements, the readings turn out to be 2.63 s, 2.56 s, 2.42 s, 2.71s and 2.80 s. Calculate the absolute errors, relative error or...

## L5 – Example 2.8 – Errors in sum, difference, product, divide and power

Topics/Questions discussed in this video: In this lecture I am discussing Example 2.8 Errors in sum, difference, product, divide and power for Chapter 2 Units and Measurements Class 11 Physics IIT Jee Mains/Neet. Example 2.8 The temperatures of two bodies measured by...

## L6 – Significant Figures Units and Measurements

Topics/Questions discussed in this video: Significant Figures Units and Measurements Download PDF of Notes

## L7 – Dimensional Analysis Units and Measurements

Topics/Questions discussed in this video: Dimensional Analysis Units and Measurements Download PDF of Notes

## L8 – Example 2.6 – Units and Measurements

Topics/Questions discussed in this video: Example 2.6 Two clocks are being tested against a standard clock located in a national laboratory. At 12:00:00 noon by the standard clock, the readings of the two clocks are : MondayTuesdayWednesday Thursday FridaySaturday...

## L9 – Example 2.9 to 2.12 Units and Measurements

Topics/Questions discussed in this video: Example 2.10 Two resistors of resistances R1 = 100±3 ohm and R2 = 200 ± 4 ohm are connected (a) in series, (b) in parallel. Find the equivalent resistance of the (a) series combination, (b) parallel combination. Use for (a)...

## L10 – Exercise 2.1 to 2.6 Units and Measurements

Topics/Questions discussed in this video: Note : In stating numerical answers, take care of significant figures. Exercise 2.1 Fill in the blanks (a) The volume of a cube of side 1 cm is equal to .....m3 (b) The surface area of a solid cylinder of radius 2.0 cm and...

## L11 – Exercise 2.7 to 2.15 Units and Measurements

Topics/Questions discussed in this video: Exercise 2.7 A student measures the thickness of a human hair by looking at it through a microscope of magnification 100. He makes 20 observations and finds that the average width of the hair in the field of view of the...

## L12 – Exercise 2.16 to 2.24 Units and Measurements

Topics/Questions discussed in this video: Exercise 2.16 The unit of length convenient on the atomic scale is known as an angstrom and is denoted by Å: 1 Å = 10–10 m. The size of a hydrogen atom is about 0.5 Å. What is the total atomic volume in m3 of a mole of...

## Exercise 2.1 Inverse Trigonometric Functions

Topics/Questions discussed in this video: 00:00:30 What is the meaning of Inverse Trigonometry 00:03:40 Conditions when inverse of a function exists 00:17:50 Range of Inverse trigonometric functions (Principal values) 00:21:13 Derivation for negative input in inverse...

## (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...

## (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...

## Introduction to Area and Perimeter of Circle with Exercise 12.1- Class 10 Maths

Topics/Questions discussed in this video: 00:00:05 Introduction to area of circle and perimeter(circumference) of circle NCERT Solutions Exercise 12.1 00:02:42 Question 1 The radii of two circles are 19 cm and 9 cm respectively. Find the radius of the circle which has...

## 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...

## Matrices Class 12 Maths Chapter 3 Miscellaneous Exercise

Topics/Questions discussed in this video: 00:00:58 NCERT Solutions Miscellaneous Exercise Question 4If A and B are symmetric matrices, prove that AB – BA is a skew symmetric matrix. 00:05:18 NCERT Solutions Miscellaneous Exercise Question 5Show that the matrix B′AB is...

## Exercise 4.2 (Q10 to Q16) Determinants Class 12 Maths Chapter 4

Topics/Questions discussed in this video: 00:00:47 NCERT Solutions Exercise 4.2 Question 10 part (i) [latex] {\begin{vmatrix} {x + 4}&{2x}&{2x}\\ {2x}&{x + 4}&{2x}\\ {2x}&{2x}&{x + 4} \end{vmatrix} = (5x + 4){{(4 - x)}^2}} [/latex]00:05:57 NCERT Solutions Exercise 4.2...

## 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...

## Exercise 4.3 Chapter 4 Quadratic Equations Class 10 Maths

Topics/Questions discussed in this video: 00:00:40 Derivation for Quadratic formula 00:23:00 NCERT Exercise 4.3 Question 3 Find the roots of the following equations: (i) [latex]x - \frac{1}{x} = 3,\,\,x \ne 0[/latex] (ii) [latex]\frac{1}{{x + 4}} - \frac{1}{{x - 7}} =...

## Exercise 1.1 Relations and Functions Class 12 Maths Chapter 1

Topics/Questions discussed in this video: Question 1. Let R be the relation in the set N given by [latex]R = {(a, b) : a = b – 2, b \in 6}[/latex]. Choose the correct answer. A. (2, 4) ∈ R B. (3, 8) ∈ R C. (6, 8) ∈ R D. (8, 7) ∈ R (N) Question 2. Let A= {1, 2, 3,} and...

## One-One, Many-one, Onto, Into Functions Class 12 Maths Chapter 1

Topics/Questions discussed in this video: 00:00:01 Introduction to this part of lecture 00:01:32 One – One or Injective and Many – One 00:22:23 Question 3 Let A = {1, 2, 3}, B = {4, 5, 6, 7} and let f = {(1, 4), (2, 5), (3, 6)} be a function from A to B. Show that f...

## Exercise 2.2 Inverse Trigonometric Functions Class 12 Maths

Topics/Questions discussed in this video: 00:00:00 Introduction for inverse trigonometry identities 00:03:34 Derivation of all inverse trigonometric identities Prove the following: 00:15:14 NCERT Solutions Exercise 2.2 Question 1 [latex]3{\sin ^{ - 1}}x = {\sin ^{ -...

## Continuity And Differentiability Class 12 Maths Chapter 5 Exercise 5.1

Topics/Questions discussed in this video: I am discussing about how to check continuity and discontinuity in a graph of a function through limits. I am using my own assignments to explain NCERT Exercise 5.1 Questions as well as Extra (HOTS) question for explanation...

## Exercise 5.4 & 5.5 Continuity And Differentiability Class 12 Maths Chapter 5

Topics/Questions discussed in this video: In this lecture, I am discussing few questions based on derivatives of logarithmic and exponential functions. Also, when and how to use Logarithms in Differentiation? NCERT EXERCISE 5.4 Differentiate the following w.r.t. x:...

## Exercise 6.2 Application of Derivatives Class 12 Maths Chapter 6

Topics/Questions discussed in this video: In this lecture, I am discussing how to find intervals in which the given function is increasing and decreasing. Also, questions based on this topic from NCERT Exercise 6.2 Questions discussed in this lecture: NCERT EXERCISE...