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Vika [28.1K]
3 years ago
14

What is the length of ? Round to the nearest tenth.

Geography
2 answers:
Bogdan [553]3 years ago
8 0

Using basic trigonometry we can write an equation in COS.

Taking 75° as the angle, its adjacent side is given and we need to find hypotenuse (x). Hence, we use cosine.


We know cos x=\frac{adjacent}{hypotenuse}, so we can write,

cos 75 = \frac{10}{x} \\x=\frac{10}{cos 75} \\x=\frac{10}{0.2588} \\x=38.64

The length of x, rounded to one decimal place, is 38.6 meters. Fourth choice is correct.


ANSWER: 38.6 m

Svetlanka [38]3 years ago
4 0

Answer:

D.

Explanation:

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