Ответ:
∠RNK=90+30=120
RN=84/2=42
Cos 30° = RN/ON = √3/2
ON = 2RN/√3 = 2*42/√3 = (2*42*√3)/3 = 28√3
Радиус ON = 28√3
Объяснение:
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Ответ:
∠RNK=90+30=120
RN=84/2=42
Cos 30° = RN/ON = √3/2
ON = 2RN/√3 = 2*42/√3 = (2*42*√3)/3 = 28√3
Радиус ON = 28√3
Объяснение: