Răspuns:
Explicație pas cu pas:
1) 1° = π/180°
a) 30° = 30°·π/180° = π/6
b) 45° =45°·π/180° = π/4
c) 60° =60°·π/180° = π/3
d) 270° = 270°·π/180° = 3·π/2
e) 540° = 540°·π/180° = 3·π
2) 1 radian = 180°/π
a) 3π rad = 3π·180°/π = 540°
b) 5π rad = 5π·180°/π = 900°
c) π/4 rad = π·180°/4π = 45°
d) π/6 rad = π·180°/6π = 30°
e) 5π/4 rad = 5π·180°/4π = 225°
f) 3π/4 rad = 3π·180°/4π = 135°
