Math, asked by sgudhaya, 3 months ago

1+cot^2A/1+tan^2A
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Answers

Answered by Anonymous
0

Step-by-step explanation:

 \frac{1 +  {cot}^{2}a }{1 + tan ^{2}a }  \\  \\  \\  =  \frac{1 +  \frac{ {cos}^{2} a}{ {sin}^{2} a} }{1 +  \frac{ {sin}^{2} a}{ {cos}^{2} a} }  \\  \\  \\  =  \frac{ \frac{ {sin}^{2}a +  {cos}^{2}a  }{ {sin}^{2} a} }{ \frac{ {cos}^{2} a +  {sin}^{2}a }{ {cos}^{2} a} }  \\  \\  \\  =  \frac{ \frac{1}{ {sin}^{2}a } }{ \frac{1}{ {cos}^{2} a} }  \\  \\  \\  =  \frac{ {cos}^{2}a }{ {sin}^{2} a}  \\  \\  \\  =  {cot}^{2} a \\  \\  \\  \\ formula  - \:  \:  \:  cot \: a =  \frac{cos \: a}{sin \: a}  \\  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: tan  \: a =  \frac{sin \: a}{cos \: a}  \\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: {sin}^{2} a +  {cos}^{2} a = 1

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