Math, asked by Anonymous, 1 year ago

hey guys...
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tan theta /1- cot theta + cot theta /1- tan theta = 1 + sec theta cosec theta .....


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Anonymous: so wht
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anshumishra1: Nthing special

Answers

Answered by razinfarzeen010
6

hope this helps hiiiiii

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Answered by DevilDoll12
7
HEYA!!
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 \frac{tan \alpha }{1 - cot \:  \alpha }  +  \frac{cot \:  \alpha }{1 - tan \:  \alpha }  = 1 + sec  \: \alpha \:  \:  cosec  \: \alpha  \\  \\  <  < taking \:  \: lhs \:  \:  >  >  \\  \\  \\  \frac{tan \:  \alpha }{1 -  \frac{1}{tan \:  \alpha } }  +  \frac{ \frac{1}{tan \:  \alpha } }{1 - tan \alpha }  \\  \\  \\  \frac{tan {}^{2} \alpha  }{tan \:  \alpha  - 1}  +  \frac{1}{tan \alpha (1 - tan \:  \alpha )}  \\  \\  \\  \frac{ - tan {}^{2} \alpha  }{1 - tan \alpha }  +  \frac{1}{tan \:  \alpha (1 - tan \:  \alpha )}  \\  \\  \frac{ - tan {}^{3}  \alpha  + 1}{(1 - tan \:  \alpha )(tan \:  \alpha )} \\  \\  \\  < using \: a {}^{3}   - b {}^{3}  >  \\  \\  \\  \\  \frac{(1 - tan \alpha )(tan {}^{2} \alpha  + 1 + tan \alpha ) }{(1 - tan \alpha )(tan \alpha )}  \\  \\  \frac{sec {}^{2}  \alpha  + tan \alpha }{tan \alpha }  \\  \\  \frac{sec {}^{2}  \alpha }{tan \alpha }  +  \frac{tan \alpha }{tan \alpha }  \\  \\  \frac{1}{cos {}^{2}  \alpha }  \times  \frac{cos \alpha }{sin \alpha }  + 1 \\  \\  \frac{1}{cos \alpha }   \frac{1}{sin \:  \alpha }   + 1 \\  \\ sec \alpha  \:  \: cosec \alpha  + 1 = rhs
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