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What is the importance of studying …

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What is the importance of studying statistics?

Solve the equation. Sin2x + cosx = 0

  • 2 answers

Minakshi Kapoor 6 years, 9 months ago

Knowledge in statistics provides us with the necessary tools and conceptual foundations in quantitative reasoning to extract information intelligently from this sea of data.

Rashmi Bajpayee 6 years, 9 months ago

{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}

http://mycbseguide.com/examin8/

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