[761.] PROPOSITION VIII. Probleme.

[762.] Lemme.

[763.] Demonstration.

[764.] PROPOSITION IX. Probleme.

[765.] PROPOSITION X. Theoreme

[766.] Demonstration.

[767.] PROPOSITION XI. Probleme.

[768.] PROPOSITION XII. Theoreme.

[769.] Demonstration.

[770.] PROPOSITION XIII. Probleme.

[771.] Uſages des Logarithmes pour le calcul des Triangles.

[772.] Exemple I.

[773.] Exemple II.

[774.] Exemple III.

[775.] Application de la Trigonometrie a la pratique. PROPOSITION XIV. Probleme.

[776.] Remarque.

[777.] PROPOSITION XV. Probleme.

[778.] Remarque generale.

[779.] PROPOSITION XVI. Probleme.

[780.] PROPOSITION XVII. Probleme.

[781.] Application de la Trigonométrie à la Fortification.

[782.] Maniere de tracer les Fortifications ſur le terrein.

[783.] Problêmes de Trigonométrie applicables à la Fortification. Probleme I.

[784.] Solution.

[785.] Remarque.

[786.] Probleme II.

[787.] Solution I.

[788.] Solution geométrique.

[789.] Remarque.

[790.] Corollaire I.