3 years ago

Round to the nearest tenth

Mathematics

1 answer:

nata0808 [166]3 years ago

3 0

9514 1404 393

Answer:

21.4

Step-by-step explanation:

For this problem, you only need to know that the hypotenuse (x) is the longest side of the triangle. The only answer choice longer than 20 is ...

x = 21.4

If you want to actually go through the numbers, you know that ...

Cos = Adjacent/Hypotenuse

cos(21°) = 20/x

x = 20/cos(21°)

x ≈ 21.4

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