Pour la question numero 2 . la reponse c'est oui , parce qu'une droite perpendiculaire est une droite passant a un point donne . tu vois que les lignes de la maison sont exactement rencontres . c'est une droite perpendiculaire

3 0

3 years ago

32 + (7 − 2) ⋅ 4 − 6 over 3

serious [3.7K]

32 + (7 - 2) 4 -6/3

32 + 5 * 4 - 2

32 + 20 - 2

52 - 2

= 50

I hope that's help:0

3 0

3 years ago

Do you know works in a building that is 130 feet tall. She's outside, looking up at the building at an angle of 37° from her fee

bekas [8.4K]

Answer:

17.6 feet

Step-by-step explanation:

If Diana walks forward and her angle looking to the top of the building changes to 40°, how much closer is she to the building? Round the answer to the nearest tenth of a foot.

Let x be the distance between the building and Diana,

Tan theta = opposite / adjacent side

then tan 37 = 130/x

$tan(37)=\frac{130}{x} \\xtan(37)= 130\\x=\frac{130}{tan(37)} =172.5 feet$

Let y be distance between the building and Diana after moving forward,

$tan(40)=\frac{130}{y} \\ytan(40)= 130\\y=\frac{130}{tan(40)} =154.9 feet$

now find the distance by subtracting to find how much closer she is to the building

$172.5 - 154.9 = 17.6 ft$

8 0

3 years ago