So Pour réduire la consommation en diesel d'un
cargo, des ingénieurs ont fixé un gigantesque cerf-
volant à la proue, pour pouvoir tirer le cargo selon un
angle de 45°, depuis une hauteur verticale de 150 m.
150 m
45
Calculer une valeur approchée à l'unité près de la
longueur, en m, de la corde du cerf-volant.

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.