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7nadin3 [17]
4 years ago
15

A 20-foot support post leans against a wall, making a 70° angle with the ground. to the nearest tenth of a foot, how far up the

wall will the support post reach?
Mathematics
1 answer:
andriy [413]4 years ago
7 0
To solve this problem you must apply the proccedure shown below:
 1. You have that the <span>20-foot support post makes a 70° angle with the ground. Therefore, you have:
 Sin</span>α=opposite/hypotenuse
 α=70°
<span> opposite=x
 hypotenuse=20
 2. When you substitute the values, you obtain:
 Sin(70°)=x/20
 3. Now, solve for x:
 x=20Sin(70°)
 x=18.8
 The answer is: 18.8 feet </span>
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One solution was found :

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           4

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