If ∠ 1 = 38 ° 5 ′ 46 ″, ∠ 2 = 72 ° 18 ′ 8 ″, then 3 ∠ 1 - half ∠ 2 =?

If ∠ 1 = 38 ° 5 ′ 46 ″, ∠ 2 = 72 ° 18 ′ 8 ″, then 3 ∠ 1 - half ∠ 2 =?

If ∠ 1 = 38 ° 5 ′ 46 ″, ∠ 2 = 72 ° 18 ′ 8 ″, 3 ∠ 1 = 3 * 38 ° 5 ′ 46 ″ = 114 ° 17 ′ 18 ″
Half ∠ 2 = 1 / 2 * 72 ° 18 ′ 8 ″ = 36 ° 9 ′ 4 ″
3 ∠ 1 - half ∠ 2 = 114 ° 17 ′ 18 ″ - 36 ° 9 ′ 4 ″ = 78 ° 8 ′ 14 ″
(Note: 1 ° = 60'1 '= 60 ″)

Adding two digits equals 38? 40? 44? 58? 18? 28?
38 = number plus number, two digit addition equals 38,
44 = number plus number, two digit addition equals 44
58 = number plus number, two digit addition equals 58
28 = number plus number, two digit addition equals 28
18 = number plus number, two digit addition equals 18
40 = number plus number, two digit addition equals 40

38 = 20 + 18, 44 = 21
23,58=30+28,28=10+18,18=10+8,40=20+20.