Odpowiedź:
A.
π/4 + π/8 = 2π/8 + π/8 = 3π/8 = (3•180º/8 = 67,5º = 67º 30') [π = 180º]
B.
(½)π - π/6 = 3π/6 - π/6 = 2π/6 = π/3 = (180º/3 = 60º)
Szczegółowe wyjaśnienie:
A.
π/4 + π/8 = 2π/8 + π/8 = 3π/8 = (3•180º/8 = 67,5º = 67º 30') [π = 180º]
B.
(½)π - π/6 = 3π/6 - π/6 = 2π/6 = π/3 = (180º/3 = 60º)