NCERT Solutions with NCERTplanet
NCERT Solutions with NCERTplanet
Class 10 – Mathematics Introduction To Trigonometry – Exercise 8.4 Exercise 8.4 Question : 1:Express the trigonometric ratios sin A, sec A and tan A in terms of cot A. Answer : (i) sin A = √(sin2 A) = √(1/coses2…
Class 10 – Mathematics Application To Trigonometry – Exercise 9.1 Exercise 9.1 Question : 1:A circus artist is climbing a 20 m long rope, which is tightly stretched and tied from the top of a vertical pole to the ground. Find…
Class 10 – Mathematics Introduction To Trigonometry – Exercise 8.3 Exercise 8.3 Question : 1:Evaluate : (i) sin 18o/cos 72o (ii) tan 26/cot 64o (iii) cos 48o – sin 42o (iv) cosec 31o – sec 59o Answer : (i) sin 18o/cos…
Class 10 – Mathematics Introduction To Trigonometry – Exercise 8.2 Exercise 8.2 Question : 1:Evaluate the following : (i) sin 60o cos 30o + sin 30o cos 60o (ii) 2 tan2 45o + cos2 30o – sin2 60o (iii) cos…
Class 10 – Mathematics Introduction To Trigonometry – Exercise 8.1 Exercise 8.1 Question : 1:In Δ ABC, right-angled at B, AB = 24 cm, BC = 7 cm. Determine: (i) sin A, cos A (ii) sin C, cos C Answer…
Class 10 – Mathematics Coordinate Geometry – Exercise 7.4 Exercise 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).…
Class 10 – Mathematics Coordinate Geometry – Exercise 7.3 Exercise 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) Answer : (i)…
Class 10 – Mathematics Coordinate Geometry – Exercise 7.2 Exercise 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. Answer : Let P(x, y)…
Class 10 – Mathematics Coordinate Geometry – Exercise 7.1 Exercise 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, –…
Class 10 – Mathematics Triangles – Exercise 6.4 Exercise 6.4 Question : 1:Let Δ ABC ~ Δ DEF and their areas be, respectively, 64 cm2 and 121 cm2. If EF = 15.4 cm, find BC. Answer : Given, Δ ABC…
Class 10 – Mathematics Triangles – Exercise 6.3 Exercise 6.3 Question : 1:State which pairs of triangles in Fig. 6.34 are similar. Write the similarity criterion used by you for answering the question and also write the pairs of similar…
Class 10 – Mathematics Triangles – Exercise 6.2 Exercise 6.2 Question : 1:In Fig. 6.17, (i) and (ii), DE || BC. Find EC in (i) and AD in (ii) Answer : (i) Let EC = x cm Given that DE…