NCERT Solutions with NCERTplanet
NCERT Solutions with NCERTplanet
Class 11 – Mathematics Trigonometric Function – Exercise 3.2 Question 1: Find the values of other five trigonometric functions if cos x = -1/2, x lies in third quadrant. Answer: Given, cos x = -1/2 So, sec x = 1/cos…
Class 11 – Mathematics Trigonometric Function – Exercise 3.1 Question 1: Find the radian measures corresponding to the following degree measures: (i) 25° (ii) – 47° 30′ (iii) 240° (iv) 520° Answer: (i) 25° We know that 180° = π…
Class 11 – Mathematics Relation – Exercise 2 – Misc Question 1: The relation f is defined by f(x) = x2, 0 ≤ x ≤ 3 3x, 3 ≤ x ≤ 10 The relation g is defined by g(x) = …
Class 11 – Mathematics Relation – Exercise 2.3 Question 1: Which of the following relations are functions? Give reasons. If it is a function, determine its domain and range. (i) {(2, 1), (5, 1), (8, 1), (11, 1), (14, 1),…
Class 11 – Mathematics Relation – Exercise 2.2 Question 1: Let A = {1, 2, 3,…,14}. Define a relation R from A to A by R = {(x, y): 3x – y = 0, where x, y ∈ A}. Write…
Class 11 – Mathematics Relation – Exercise 2.1 Question 1: If (x/3 + 1, y – 2/3) = (5/3, 1/3), find the values of x and y. Answer: It is given that (x/3 + 1, y – 2/3) = (5/3,…
Class 11 – Mathematics Sets – Exercise – Misc Question 1: Decide, among the following sets, which sets are subsets of one and another: A = {x : x ∈ R and x satisfy x2– 8x + 12 = 0}, …
Class 11 – Mathematics Sets – Exercise 1.6 Question 1: If X and Y are two sets such that n(x) = 17, n(Y) = 23 and n(X ∪ Y) = 38, find n(X ∩ Y). Answer: It is given that:…
Class 11 – Mathematics Sets – Exercise 1.5 Question 1: Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {1, 2, 3, 4}, B = {2, 4, 6, 8} and C = {3, 4, 5,…
Class 11 – Mathematics Sets – Exercise 1.4 Question 1: Find the union of each of the following pairs of sets: (i) X = {1, 3, 5} Y = {1, 2, 3} (ii) A = [a, e, i, o, u} …
Class 11 – Mathematics Sets – Exercise 1.3 Question 1: Make correct statements by filling in the symbols ⊂ or ⊄ in the blank spaces: (i) {2, 3, 4} . . . {1, 2, 3, 4,5} (ii) {a, b, c}…
Class 11 – Mathematics Sets – Exercise 1.2 Question 1: Which of the following are examples of the null set (i) Set of odd natural numbers divisible by 2 (ii) Set of even prime numbers (iii) { x : x…