Réponse:
1)RF = FS−RS = 18−1,5 = 16,5 m.
2)PF² = RP² + RF²
PF² = RP² + RF² PF² = 10² + (16,50)²
PF² = RP² + RF² PF² = 10² + (16,50)² PF² = 100 + 272,25
PF² = RP² + RF² PF² = 10² + (16,50)² PF² = 100 + 272,25 PF = √372,25
PF² = RP² + RF² PF² = 10² + (16,50)² PF² = 100 + 272,25 PF = √372,25 PF = 19,29378
donc l'échelle est assez longue
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Réponse:
1)RF = FS−RS = 18−1,5 = 16,5 m.
2)PF² = RP² + RF²
PF² = RP² + RF² PF² = 10² + (16,50)²
PF² = RP² + RF² PF² = 10² + (16,50)² PF² = 100 + 272,25
PF² = RP² + RF² PF² = 10² + (16,50)² PF² = 100 + 272,25 PF = √372,25
PF² = RP² + RF² PF² = 10² + (16,50)² PF² = 100 + 272,25 PF = √372,25 PF = 19,29378
donc l'échelle est assez longue