tolong dibantuu......
Jawaban:
[tex]\tt{sin(a)}^{2}[/tex]
Penjelasan dengan langkah-langkah:
[tex]\frac {tan \: a}{tan \: a + cot \: a}[/tex]
= [tex]\frac {sin (a)}{cos (a)}\\ \frac {{{sin (a)}^{2}+cos (a)}^{2}}{cos (a)\:sin(a)}[/tex]
= [tex]\frac {sin (a)}{cos (a)} \\ \frac {1}{cos (a)\:sin(a)}[/tex]
= [tex]\tt{sin(a)}^{2}[/tex]
