Question

Answer as soon as possible ​

Answer 1

$\small \bf \red{hey \: mate \: here \: is \: ur \: ans} \\ \\ \small \bf \red{ \huge \: solution} \\ \\ \small \bf \red{tan \: \frac{a}{2} = \sqrt{ \frac{1 - \: cos \: a}{1 + cos \: a} } } \\ \\ \small \bf \red{tan \: \frac{a}{2} = \frac{sin \: a}{1 + cos \: a} } \\ \\ \small \bf \red{tan \: \frac{a}{2} = \frac{1 - cos \: a}{sin \: a} \: \: \: ans}$

Answer 2

1 is the answer...

I hope u are able to understand it....
if yes, then plz mark as btainliest...