Cherchons С
:
.
C)
On considère trois triangles rectangles ayant un angle de 35°
1. À l'aide d'une calculatrice, donner
la valeur approchée des quotients
6,77
suivants.
AC BD SE CG HD TE CG
a)
El DH
-; b)
AG'BH' SI AG BH SE CA' ES' DB
Que constate-t-on ?
2. À l'aide d'une calculatrice donner
une valeur approchée de cos 35º;
sin 35° et tan 35° (appelés cosinus,
sinus et tangente d'un angle de 35°).
4,74
8,264
G
13
1​

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?