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Vinil7 [7]
3 years ago
9

Help with question # 16. Please and thank you.

Mathematics
1 answer:
Korolek [52]3 years ago
5 0
Okay
now draw a right angled triangle
labeling the hypotenus 57ft
the opposite x and the adjacent 5.5 ft and the angle in the right angle triangle is 55 °. 
now solve
sin 55°=x/5.5
0.8192(the sin of 55)= x/5.5
cross multiply
X=4.51
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Answer:

42.25 feet ³

Step-by-step explanation:

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Length = 6 1/2 feet = 6.5 feet

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3 years ago
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3 years ago
How do you solve this?
Bogdan [553]

Answer:

  x = y = (15/2)√2

Step-by-step explanation:

You can recognize this as an isosceles right triangle, so x=y. They Pythagorean theorem then tells you that ...

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  225/2 = x²

  √(225/2) = x = √(225·2/4) = (15/2)√2

The solution is x = y = (15/2)√2.

_____

<em>Comment on isosceles right triangles</em>

It is worth remembering that the ratio of sides of an isosceles right triangle is ... side : side : hypotenuse = 1 : 1 : √2.

Knowing this lets you write down the solution to this problem as ...

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Of course, the denominator of this fraction can be rationalized by multiplying the fraction by (√2)/(√2) to get (15√2)/2 or (15/2)√2.

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3 years ago
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3 years ago
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Simora [160]

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tan 36= x/7

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x=3.11

hope it helps...

have a great day!!

3 0
3 years ago
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