Question

计算 15°42’12”×5 （2）32.68°-28°41’55”

Answer 1

15°42’12”×5=15°×5+42’×5+12”×5=75°+210’+60”=78°31’

32.68°-28°41’55”=32°40’48”-28°41’55”

=(32-28)°+(40-41)’+(48-55)”=4°-1’-7”=3°58’53”