RD Sharma Class 10 Solutions Chapter 7 Statistics RD Sharma Class 10 Solutions Statistics Exercise 7.1 Question 1. Calculate the mean for the following distribution : X 5 6 7 8 9 f 4 8 14 11 3 Solution: Question 2. Find the mean of the following data: X 19 21 23 25 27 29…
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RD Sharma Class 10 Solutions Chapter 6 Trigonometric Identities RD Sharma Class 10 Solutions Trigonometric Identities Exercise 6.1 Prove the following trigonometric identities : Question 1. (1 – cos2 A) cosec2 A = 1 Solution: (1 – cos2 A) cosec2 A = 1 L.H.S. = (1 – cos2 A) cosec2 A = sin2 A cosec2…
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RD Sharma Class 10 Solutions Chapter 5 Trigonometric Ratios RD Sharma Class 10 Solutions Trigonometric Ratios Exercise 5.1 Question 1. In each of the following, one of the six trigonometric ratios is given. Find the values of the other trigonometric ratios. Solution: ∴ Perpendicular BC – 2 units and Hypotenuse AC = 3 units By…
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RD Sharma Class 10 Solutions Triangles RD Sharma Class 10 Solutions Triangles Exercise 4.1 Question 1. Fill in the blanks using the correct word given in brackets : (i) All circles are …………… (congruent, similar). (ii) All squares are ………… (similar, congruent). (iii) All …………….. triangles are similar (isosceles, equilaterals) : (iv) Two triangles are…
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RD Sharma Class 10 Solutions Pair Of Linear Equations In Two Variables Ex 3.10 Question 1. Points A and B are 70 km. a part on a highway. A car starts from A and another car starts from B simultaneously. If they travel in the same direction, they meet in 7 hours, but if they…
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RD Sharma Class 10 Solutions Pair Of Linear Equations In Two Variables Exercise 3.8 Question 1. The numerator of a fraction is 4 less than the denominator. If the numerator is decreased by 2 and denominator is increased by 1, then the denominator is eight times the numerator. Find the fraction. (C.B.S.E. 1990) Solution: Let…
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RD Sharma Class 10 Solutions Pair Of Linear Equations In Two Variables Exercise 3.5 Question 1. x – 3y = 3 3x – 9y = 2 (C.B.S.E. 1994) Solution: Question 2. 2x + y = 5 4x + 2y = 10 (C.B.S.E. 1995C) Solution: Question 3. 3x – 5y = 20 6x – 10y =…
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RD Sharma Class 10 Solutions Pair Of Linear Equations In Two Variables Ex 3.3 Solve the following systems of equations: Question 1. 11x + 15y + 23 = 0 7x – 2y – 20 = 0 Solution: 11x + 15y + 23 = 0 => 11x + 15y = -23 ……..(i) 7x – 2y –…
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RD Sharma Class 10 Solutions Pair Of Linear Equations In Two Variables RD Sharma Class 10 Solutions Pair Of Linear Equations In Two Variables Exercise 3.1 Question 1. Akhila went to a fair in her village. She wanted to enjoy rides on the Giant Wheel and play Hoopla (a game in which you throw a…
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RD Sharma Class 10 Solutions Chapter 2 Polynomials RD Sharma Class 10 Solutions Polynomials Exercise 2.1 Question 1. Find the zeros of each of the following quadratic polynomials and verify the relationship between the zeros and their co-efficients : Solution: (i) f(x) = x2 – 2x – 8 Question 2. For each of the following, find…
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