Объяснение:
1)
45° = (π×45°)/180° =π/4
120° = (π×120°)/180° = 2π/3
540° = (π×540°)/180° = 3π
2)
π/6 = (π×180°)/(6×π) = 180°/6 = 30°
7π/2 = (7π×180°)/(2×π) = 7×90° = 630°
3π = (3π×180°)/π = 540°
3)
Найти: sin(a)-?, tg(a)-?, ctg(a)-?
4)
5)
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Answers & Comments
Объяснение:
1)
45° = (π×45°)/180° =π/4
120° = (π×120°)/180° = 2π/3
540° = (π×540°)/180° = 3π
2)
π/6 = (π×180°)/(6×π) = 180°/6 = 30°
7π/2 = (7π×180°)/(2×π) = 7×90° = 630°
3π = (3π×180°)/π = 540°
3)
Найти: sin(a)-?, tg(a)-?, ctg(a)-?
4)
5)