class 10 (MATHS)

NCERT solutions for class 10 Maths Chapter 8 Introduction to Trigonometry Exercise 8.4 Ex 8.4 Question 1. Express the trigonometric ratios sin A, sec A and tan A in terms of cot A. Solution: Ex 8.4 Question 2. Write all the other trigonometric ratios of ∠A in terms of sec Read more…

NCERT solutions for class 10 Maths Chapter 8 Coordinate Geometry Exercise 8.3 Ex 8.3 Question 1. Evaluate : (i) sin 18°/cos 72°         (ii) tan 26°/cot 64°       (iii)  cos 48° – sin 42°       (iv)  cosec 31° – sec 59° Solution: (i) sin 18°/cos Read more…

NCERT solutions for class 10 Maths Chapter 8 Coordinate Geometry Exercise 8.2 Ex 8.2 Question 1.  Evaluate the following: (i) sin 60° cos 30° + sin 30° cos 60° (ii) 2 tan2 45° + cos2 30° – sin2 60 Solution : (i) sin 60° cos 30° + sin 30° cos 60° sin 30° Read more…

NCERT solutions for class 10 Maths Chapter 8 Coordinate Geometry Exercise 8.1 Ex 8.1 Question 1.  In ∆ ABC, right-angled at B, AB = 24 cm, BC = 7 cm. Determine: (i) sin A, cos A (ii) sin C, cos C Solution: In a ΔABC, Using Pythagoras Theorem, AC2=AB2+BC2 AC2 = Read more…

NCERT solutions for class 10 Maths Chapter 7 Coordinate Geometry Exercise 7.4 Ex 7.4 Question 1.  Determine the ratio in which the line 2x + y – 4 = 0 divides the line segment joining the points A(2, –2) and B(3, 7). Solution:  Ex 7.4 Question 2. Find the relation Read more…

NCERT solutions for class 10 Maths Chapter 7 Coordinate Geometry Exercise 7.3 Ex 7.3 Question 1. Find the area of the triangle whose vertices are: (i) (2, 3), (-1, 0), (2, -4) (ii) (-5, -1), (3, -5), (5, 2) Solution: Ex 7.3 Question 2. In each of the following find Read more…

NCERT solutions for class 10 Maths Chapter 7 Coordinate Geometry Exercise 7.2 Ex 7.2 Question 1. Find the coordinates of the point which divides the join of (- 1, 7) and (4, – 3) in the ratio 2:3. Solution: Ex 7.2 Question 2. Find the coordinates of the points of Read more…

NCERT solutions for class 10 Maths Chapter 7 Coordinate Geometry Exercise 7.1 Ex 7.1 Question 1. Find the distance between the following pairs of points: (i) (2, 3), (4, 1) (ii) (-5, 7), (-1, 3) (iii) (a, b), (- a, – b) Solution: Ex 7.1 Question2. Find the distance between Read more…

NCERT solutions for class 10 Maths Chapter 6 Triangles Exercise 6.6 Ex 6.6 Question 1. In Figure, PS is the bisector of ∠ QPR of ∆ PQR. Prove that QS/PQ = SR/PR Solution: Ex 6.6 Question 2. In Fig. 6.57, D is a point on hypotenuse AC of ∆ABC, such Read more…