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Flura [38]
3 years ago
13

The equation cos (35 degree) equals StartFraction a Over 25 EndFraction can be used to find the length of Line segment B C. What

is the length of Line segment B C? Round to the nearest tenth.

Mathematics
2 answers:
valentinak56 [21]3 years ago
5 0

Incomplete Question the complete Question with figure is below.

Answer:

Therefore the length of line Segment BC is 20.5 in.

Step-by-step explanation:

Given:

In Right Angle Triangle ABC

∠C = 90°

∠B = 35°

BC = a

AB = hypotenuse = 25

\cos 35\°=\dfrac{a}{25}

To Find:

BC = ?

Solution:

In Right Angle Triangle ABC , Using Cosine Identity we get

\cos B = \dfrac{\textrm{side adjacent to angle B}}{Hypotenuse}\\

Substituting we get

\cos 35 = \dfrac{a}{25}\\\\a=25\times 0.8191=20.47\\\\a=20.5\ in

Therefore the length of line Segment BC is 20.5 in.

Oksi-84 [34.3K]3 years ago
3 0

Answer:

20.5

Step-by-step explanation:

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The sum of the masses of two heavyweight boxers is 190kg. ⅘ the heavier boxer is 10kg less than the mass of lighter boxer. Find
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Answer:

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Step-by-step explanation:

<u>Equations</u>

We'll solve the problem by setting only one variable. Let's call:

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