Exercice 51 :

a) 3.45 ∠ 3.491  ∠ 3.5

b) 4.7 ∠ 4.729 ∠ 4.8

c) 23 ∠ 23.01 ∠ 23.02

d) 7.625 ∠ 7.6251 ∠ 7.626

Exercice 52

a) 5.43 ∠ 5.435 ∠ 5.44

b) 8.12 ∠ 8.125 ∠ 8.13

c) 52.91 ∠ 52.915 ∠ 52.92

d) 18.654 ∠ 18.6545 ∠ 18.655

e) 14.034 ∠ 14.0345 ∠ 14.035

f) 67.109 ∠ 67.1095 ∠ 67.110

Voilà, j'espère que tu auras compris.