1. 16,25° = ....°....' 2. 29,23° = ....° ....'....'' 3. 7,81°=....°...'...'' Tentukan besar sudut berikut 1. 39°4'+ 14°37'= 2. 69°44' + 4°37'27'' 3. 19°44'

1.
16,25° = (16 + 0,25)°
0,25 = (0,25×60)' = 150'
maka 16,05° = 16°150'

2.
29,23° = (29+0,23)°
0,23° = (0,23 × 60)' = 138'
138' = (137+1)'
1' = 60"
maka 29,23° = 29°137'60"

3.
7,81° = (7+0,81)°
0,81° = (0,81 × 60)' = 486'
486' = (485 + 1)'
1' = 60"
maka 7,81° = 7°485'60"

bagian lain
besar sudut berarti (°)
maka
A.
39°4' + 14°37' = 53°41' = 53,68°

B.
69°44' + 4°37'27" = 73°81'27" =74,36

C.
19°44' - 12°51'32" = 6°52'28" =6,87°

semoga benar dan berguna +,+