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dedylja [7]
3 years ago
12

The length of the shadow of a building is 120 meters, as shown below:

Mathematics
2 answers:
shepuryov [24]3 years ago
8 0
You would set up a ratio using tangent
tan 60 = x/120
120 tan 60 = x
x = 207.84 m
LETTER D
Eduardwww [97]3 years ago
3 0

Answer:

D. 207.84 m

Step-by-step explanation:

The side we are given is adjacent to, or beside, the 60° angle.  The side we are finding the measure of is opposite this angle.

The ratio of opposite to adjacent is tangent; setting up the tangent equation, we have

tan 60 = x/120

Multiply both sides by 120:

120(tan 60) = (x/120)*120

120(tan 60) = x

207.84 = x

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Here’s what you can do to make this very simple. Consider that the “missing” space between the rectangles isn’t there. Then, find the area:

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Now, find the area of the “missing” part.

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Answer:

<em>Total cost=$73.60 </em>

Step-by-step explanation:

<u>Arithmetics To Solve Simple Problems </u>

Sometimes the use of the most basic operations can be handy to solve problems of a variety of complexities without the use of equations or algebra. We'll approach to the solution of this question by pure logic and basic operations.

If the gift was originally meant to be paid for all 5 brothers, each one would have paid one-fifth of the cost. But since the younger brother won't be paying anything, the cost will be divided among the other four brothers, each one of which will pay now one-fourth of the cost. But this new division is $3.68 more than the previous one. If we take the difference between both fractions, we get

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Let's check. Each brother should have paid $73.60/5=$14,72. But the four brothers really paid $73.6/4=$18.40. The difference is cost is $18.40-$14,72=$3.68 as required

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