10°20′24″= ° 25°53′×3=
问题描述：
10°20′24″= ° 25°53′×3=
答
10°20′24″= 10°24′+（24/60)′
=10°24′+0.4′=10 °20.4'
=10 °+(20.4/60)°
=10 °+0.34°
=10.34°
25°53′×3
=25°×3+53′×3
=75°+159′
=75°+(159/60)°
=75°+2°+39′
=77°39′