Answer
$29^{\circ}24'40''$.
Work Step by Step
We know that $1^o = 60’$
$1’=60"$. Use a calculator and the conversion factors above to obtain:
$29.411^{\circ}\\=29^{\circ}+0.411\cdot60'\\=29^{\circ}+24.66'\\=29^{\circ}+24'+0.66\cdot60''\\=29^{\circ}+24'+39.6''\\\approx29^{\circ}24'40''$.