Grouping of Data In this lesson we will learn about the grouping of data. Grouped data are data that has been organized in groups known as classes. Grouped data has been classified and a data class is group of data. Consider the marks obtain by 15 students in a history test as given below, 23, […]

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Decimal Numbers A number whose whole number part and fractional part is separated by a decimal point is known as a decimal number.                A dot (.) represents a decimal point. When the numbers are expressed in the decimal form are called decimal numbers. In a decimal number decimal point […]

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Trigonometric Ratios of Some Specific Angles Trigonometric Ratios      Here are Trigonometric Ratios of some Specific angles,   00, 300, 450 , 600  and 900. Example: (1) Find the value of sin600 cos300 + sin300 cos600 Values of Trigonometric Ratios from above table,                        sin 600 = √3/2,                       […]

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