Math, asked by preksha11bolampalliw, 3 days ago

pls answer my question
3 \ {tan}^{2} 30 +   {tan}^{2} 60 +  {tan}^{2} 45 \div  \csc30  \times  \cos30
pls answer it​

Answers

Answered by Anonymous
29

\footnotesize \sf \pink{ Solution:-}

 \:

 \pink \rightarrow\tt{ \frac{3tan^2 30  \: + \:  tan^2 60 + \:  tan^2 45}{ cosec 30 \:  × \:  cos30}}

 \pink  \rightarrow\tt{ \frac{3( { \frac{1}{ \sqrt{3} } )}^{2} +  { (\sqrt{3}) }^{2} +  {1}^{2}   }{2 \:  \times \:  \frac{ \sqrt{3} }{2}  } }

 \pink  \rightarrow\tt{ \frac{3( { \frac{1}{3 } )}  \: +  \:  { 3 }  \: +  \:  {1}  }{ \cancel2 \:  \times \:  \frac{ \sqrt{3} }{ \cancel2}  } }

 \pink  \rightarrow\tt{ \frac{ \cancel3( { \frac{1}{ \cancel3 } )} \:  + \:   { 3 } \:  +  \:  {1}  }{   \: \sqrt{3}  } }

 \pink  \rightarrow\tt{ \frac{ 1  \: +  \:  { 3 }  \: +  \:  {1}  }{   \: \sqrt{3}  } }

 \pink  \rightarrow\tt{ \frac{ 5}{   \: \sqrt{3}  } }

 \:

\rightarrow\footnotesize \sf \pink{ Rationalise \:  the \:  denominator }

 \:

 \pink  \rightarrow\tt{ \frac{ 5}{   \: \sqrt{3}  } \times  \frac{ \sqrt{3} }{ \sqrt{3} }  }

 \pink  \rightarrow\tt{ \frac{ 5 \sqrt{3} }{   \: (\sqrt{3}  )^{2} }  }

 \pink  \rightarrow\tt{ \frac{ 5 \sqrt{3} }{ 3 }  }

Answered by llAesonGreyll
7

\footnotesize \sf \pink{ Solution:-} \\ </p><p></p><p>\:</p><p></p><p>\pink \rightarrow\tt{ \frac{3tan^2 30 \: + \: tan^2 60 + \: tan^2 45}{ cosec 30 \: × \: cos30}}→cosec30×cos303tan230+tan260+tan245</p><p> \\ \pink \rightarrow\tt{ \frac{3( { \frac{1}{ \sqrt{3} } )}^{2} + { (\sqrt{3}) }^{2} + {1}^{2} }{2 \: \times \: \frac{ \sqrt{3} }{2} } }→2×233(31)2+(3)2+12</p><p></p><p> \\ \pink \rightarrow\tt{ \frac{3( { \frac{1}{3 } )} \: + \: { 3 } \: + \: {1} }{ \cancel2 \: \times \: \frac{ \sqrt{3} }{ \cancel2} } }→2×233(31)+3+1</p><p></p><p> \\ \pink \rightarrow\tt{ \frac{ \cancel3( { \frac{1}{ \cancel3 } )} \: + \: { 3 } \: + \: {1} }{ \: \sqrt{3} } }→33(31)+3+1</p><p></p><p> \\ \pink \rightarrow\tt{ \frac{ 1 \: + \: { 3 } \: + \: {1} }{ \: \sqrt{3} } }→31+3+1</p><p></p><p> \\ \pink \rightarrow\tt{ \frac{ 5}{ \: \sqrt{3} } }→35</p><p></p><p>\:</p><p></p><p> \\ \rightarrow\footnotesize \sf \pink{ Rationalise \: the \: denominator }→Rationalisethedenominator</p><p></p><p>\:</p><p></p><p> \\ \pink \rightarrow\tt{ \frac{ 5}{ \: \sqrt{3} } \times \frac{ \sqrt{3} }{ \sqrt{3} } }→35×33</p><p></p><p>\pink \rightarrow\tt{ \frac{ 5 \sqrt{3} }{ \: (\sqrt{3} )^{2} } }→(3)253</p><p></p><p> \\ \pink \rightarrow\tt{ \frac{ 5 \sqrt{3} }{ 3 } }→353</p><p></p><p>

Similar questions