Question

Sinthita + costhita/
Sinthita-costhita​

Answer 1

Answer:

I think answer is 1

Answer 2

Answer:

$\frac{ \sin( \alpha ) + \cos( \alpha ) }{ \sin( \alpha ) - \cos( \alpha ) } \: is \: your \: \: question \\ and \: my \: answer \: is \\ \frac{ \sin( \alpha ) + \cos( \alpha ) }{ \sin( \alpha ) - \cos( \alpha ) } \times \frac{ \sin( \alpha ) +\cos( \alpha ) }{ \sin( \alpha ) + \cos( \alpha ) } \: \\ \red{\boxed {\blue{we \: have \: to \: rationalise \: the \: denomenator} } } \\ \frac{ ({\sin( \alpha ) + \cos( \alpha ) )}^{2} }{ { \sin( \alpha ) }^{2} - { \cos( \alpha ) }^{2} } \\ \frac{2 (\sin( \alpha ) \cos( \alpha )) + 1 }{{ \sin( \alpha ) }^{2} - { \cos( \alpha ) }^{2} }$