RD Sharma Solutions class 10 Exercise 5.2 Trigonometric Ratios Question 4

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RD Sharma Solutions class 10 Exercise 5.2 Trigonometric Ratios Question 4

A slight variation in method is necessary when it is required to find the square root of a decimal. While finding the square root of a natural number, say, 46656, you make pairs by counting from right to left and if in the last, one digit is left, … [Continue reading]

The number of digits in the square root of a perfect square depends in the number of digits in the perfect square. Thus Number Number of the digits in the perfect square Number of digits in the square root = 35 4 2= =31 3 … [Continue reading]

Square Root Of A Perfect Square By Prime Factorization : In order to find the square root of a perfect square by prime factorization, follow the following steps.Step I- Obtain the given number.Step II- Resolve the given number into prime factors by … [Continue reading]

Rule to find the square root of a number by division method: In case of numbers where the factorization is not easy or of big numbers or of numbers whose square root is not exact, we find the square root of such numbers by division method. This … [Continue reading]

Square Root : The square root of a number 'a' is that number which when multiplied by itself gives 'a' as the product.Thus, if b is the square root of a number 'a', thenb x b = a or = aThe square root of a number 'a' is denoted byIt follows from … [Continue reading]

Property 1:- A number having 2, 3, 7 or 8 at the unit’s place is never a perfect square: i.e., a square number never ends in 2,3,7 or 8. If you have a look at all the squares, you will observe that all squares of numbers have 0, 1, 4, 5, 6, at … [Continue reading]

Square Of a Number- The square of a number is that number raised to the power 2. Thus, if ‘a’ is a number, then the square of a is written as and is given by = a x aThat is, the square of a number is obtained by multiplying it by itself.If a x a = … [Continue reading]

Dividing a Decimal Fraction by a Whole number: The following points should be kept in mind while dividing a decimal number by a whole number:Step 1) Before considering the digit of the dividend that comes just after the decimal point, put a decimal … [Continue reading]

Multiplying a Decimal Fraction by a Whole number: Step 1) Perform the multiplication treating them as ordinary numbers, ignoring the decimal point.Step 2) Note the number of decimal places in the decimal number being multiplied.Step 3) Put the … [Continue reading]

Addition and Subtraction-Decimal Numbers: Step 1) For adding or subtracting decimal numbers, write all the decimal numbers with equal number of decimal places i.e., convert them into like decimals. Add zeros at the end if necessary in order to … [Continue reading]