## Trigonometric formulae for class 10

These are some of the basic trigonometric formulas that you will come across in class 10. They are fundamental for solving trigonometry problems and understanding the relationships between trigonometric functions.(Trigonometric formulae for class 10) Formulae for Trigonometric Ratio Perpendicular =   P Base               =   B Hypotenuse   =   H (i) (ii) … Read more

## Exercise 1.2 real number class 10 ncert maths solutions

Exercise 1.2(Real numbers) Question 1: Prove that √5 is irrational. Solutions: Let us assume, that √5 is rational number.where, x and y are co-primes and y ≠ 0. i.e. √5 = x/y. ⇒ y√5= x Squaring both the sides, we get, (y√5)2 = x2 ⇒5y2 = x2……………………………….. (1) Thus, x2 is divisible by 5, so x is also divisible by 5. Let … Read more

## Exercise 1.1 real number class 10 ncert maths solutions

Exercise 1.1(Real numbers) Exercise 1.1 real number class 10 ncert maths solutions Question 1: Express each number as a product of its prime factors: (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v) 7429 Solutions: (i) 140 we will get the product of its prime factor. Therefore, 140 = 2 × 2 × 5 × … Read more