Math, asked by sathyasrinu21, 3 months ago

if tanA+cotA=2 then what is the value of Tan2A+cot2A​

Answers

Answered by Anonymous
5

EXPLANATION :

Given :

 \bull \bf \:  \:  \:  \:  \:  \underline{ \tan \: A +  \cot \: A = 2}

Formulas :

  \bull \bf \:  \:  \:  \:  \:  \: \underline{ \tan \: 2A=  \frac{2 \tan \: A}{1 -  {   \tan}^{2} A}   } \\

 \bull \:  \:  \:  \:  \:  \:  \bf \:  \underline{ \cot \: 2A =  \frac{ { \cot}^{2}A - 1 }{2 \cot \: A}  }\\

Solution :

 \sf \:  \tan \:2 A +  \cot \: 2 A \\  \\  \to \:  \sf \frac{2 \tan \:A }{1 -  { \tan}^{2} A}  +  \frac{ { \cot}^{2} A - 1}{2 \cot \: A}  \\  \\  \to  \sf \: \:  \frac{2   -  (1 -  {   \tan }^{2} A -  { \cot}^{2}A + 1) }{2 \cot \: A \: (1 -  { \tan \: }^{2}A) }  \\  \\  \to  \sf - \frac{ {( \tan \: A +  \cot \:A) }^{2} + 2 }{2 \cot \: A - 2 \tan \:A }  \\   \sf\\   \sf\to  \frac{4 + 2}{2( \tan \:A -  \cot \: A) }  \\   \\  \sf [ {( \tan \: A +  \cot \: A)}^{2} = 4  \\  \implies \:  \sf( \tan \: A -  \cot \: A) = 1] \\  \\  \to  \sf \: \frac{3}{ 1 }   \\  \\  \to \fcolorbox{skyblue}{skyblue}{3}

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HOPE THIS IS HELPFUL...

Answered by anu103820
6

Answer:

hey are you tamilan???

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