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What is the importance of studying statistics?Solve the equation. Sin2x + cosx = 0 |
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Answer» Knowledge in statistics provides us\xa0with the necessary tools and conceptual foundations in quantitative reasoning to extract information intelligently from this sea of data. {tex}\\sin 2x + \\cos x = 0{/tex}=> {tex}\\sin 2x = - \\cos x{/tex}=> {tex}2\\sin x.\\cos x = - \\cos x{/tex}=> {tex}\\sin x = - {1 \\over 2}{/tex}=> {tex}\\sin x = \\sin \\left( {\\pi + {\\pi \\over 6}} \\right){/tex}=> {tex}\\sin x = \\sin {{7\\pi } \\over 6}{/tex}=> {tex}x = {{7\\pi } \\over 6} = {210^ \\circ }{/tex} |
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