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Lynna [10]
3 years ago
6

Which of the numbers is irrational? A) 2.3 B) √3 C) √4 D) 1/3

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
8 0
Irrational number is <span>√3

Hope it helps</span>
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You are riding along a straight river from east to the west at speed of 160m/m. At a given time, you will see the bearing of a c
yuradex [85]

Using the given information, the width of the river is 505.96 m

<h3>Bearing and Distances</h3>

From the question, we are to determine the width of the river

Consider the given diagram,

Let F be the first position of the biker

S be the second position

and C be the position of the church

First, we will determine the distance covered from F to S

Speed = 160m/min

Time = 4 minutes

Using the formula,

Distance = Speed × Time

Distance covered = 160 × 4

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and ∠C = 180° - 20° - 146° = 14°

By the Law of Sines

\frac{/FC/}{sin\ S}= \frac{/FS/}{sin\ C}

∴ \frac{/FC/}{sin\ 146^\circ}= \frac{640}{sin\ 14^\circ}

/FC/ =\frac{640 \times sin \ 146^\circ}{sin \ 14^\circ}

/FC/ = 1479.33 m

Now,

By SOH CAH TOA

cos \ 70^\circ = \frac{d}{/FC/}

NOTE: d is the width of the river

∴ d = /FC/ × cos70°

d = 1479.33 × cos70°

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Hence, the width of the river is 505.96 m

Learn more on Bearing and distances here: brainly.com/question/19351991

#SPJ1

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masha68 [24]

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Step-by-step explanation:

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4 years ago
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