RD Sharma Class-11

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Class 11 RD Sharma Solutions - Chapter 13 Complex Numbers - Exercise 13.4

Last Updated: 09 July 2021

Question 1. Find the modulus and argument of the following complex numbers and hence express each of them in the polar form:(i) 1 + i(ii) √3 + i(iii) 1 – i(iv) (1 – i)/(1 ...read more

Class 11 RD Sharma Solutions - Chapter 20 Geometric Progressions- Exercise 20.6

Last Updated: 07 April 2021

Question 1: Insert 6 geometric means between 27 and 1/81.Solution:Let the six geometric means be A1, A2, A3, A4, A5, A6.Now, these 6 terms are to be added between 27 and 1 ...read more

Class 11 RD Sharma Solutions - Chapter 23 The Straight Lines - Exercise 23.4

Last Updated: 18 March 2021

Question 1. Find the equation of straight line passing through the point (6, 2) and having slope -3.Solution:We know (y - y1) = m(x - x1)Here, m = Slope of line = -3x1 = 6...read more

Class 11 RD Sharma Solutions - Chapter 5 Trigonometric Functions - Exercise 5.3

Last Updated: 05 March 2021

Question 1. Find the values of the following trigonometric ratios:(i) sin 5π/3Solution:We have, sin 5π/3=sin (2π-π/3) [∵sin(2π-θ)=-sinθ]=-sin(π/3)= - ...read more

Class 11 RD Sharma Solutions - Chapter 1 Sets - Exercise 1.6 | Set 1

Last Updated: 11 February 2021

Question 1. Find the smallest set A such that A ∪ {1, 2} = {1, 2, 3, 5, 9}.Solution:A ∪ {1, 2} = {1, 2, 3, 5, 9}The union indicates that the summation of elements of both ...read more

Class 11 RD Sharma Solutions - Chapter 16 Permutations - Exercise 16.4

Last Updated: 11 February 2021

Question 1. In how many ways can the letters of the word ‘FAILURE’ be arranged so that the consonants may occupy only odd positions?Solution:From the given word, we getF, ...read more

Class 11 RD Sharma Solutions- Chapter 19 Arithmetic Progressions- Exercise 19.2 | Set 2

Last Updated: 13 January 2021

General FormulaTn = a + (n - 1) * dwhere,Tn is the nth terma is the first termd = common difference Nth term form endTn = l - (n - 1) * dwhere,Tn is the nth terml is the f ...read more

Class 11 RD Sharma Solutions - Chapter 1 Sets - Exercise 1.8 | Set 2

Last Updated: 06 July 2022

Question11. In a survey of 60 people, it was found that 25 people read newspaper H, 26 people read newspaper T, 26 read newspaper I, 9 read both H and i, 11 read both H an ...read more

Class 11 RD Sharma Solutions - Chapter 23 The Straight Lines- Exercise 23.7

Last Updated: 05 November 2021

Question 1: Find the equation of a line for which(i) p = 5, α = 60°(ii) p = 4, α = 150°(iii) p = 8, α = 225°(iv) p = 8, α = 300°Solution:(i) p = 5, α = 60°Given: p = 5, α ...read more

Class 11 RD Sharma Solutions - Chapter 1 Sets - Exercise 1.1

Last Updated: 03 May 2021

Question 1. What is the difference between a collection and a set? Give reasons to support your answer.Solution:A collection represents a group of objects. Whereas well-de ...read more

Class 11 RD Sharma Solutions - Chapter 1 Sets - Exercise 1.2

Last Updated: 17 December 2020

Question 1. Describe the following sets in Roster form:(i) {x : x is a letter before e in the English alphabet}(ii) {x ∈ N: x2 25}(iii) {x ∈ N: x is a prime number, 10 x ...read more

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Class 11 RD Sharma Solutions - Chapter 20 Geometric Progressions- Exercise 20.2

Last Updated: 17 December 2020

Question 1. Find the three numbers in G.P whose sum is 65 and whose product is 3375.Solution:Let the three numbers in G.P as a/r, a, ar.Given that product of three numbers ...read more

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