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3 years ago

1 1/2 ÷3/4 1 one half divided by 3/4

Mathematics

2 answers:

kipiarov [429]3 years ago

4 0

Answer:

Step-by-step explanation:

1.5 divided by .75

postnew [5]3 years ago

4 0

Answer:

2/3 or 0.66666666666

Step-by-step explanation:

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The height of a radio tower is 650 feet, and the ground on one side of the tower slopes upward at an angle of 10°.

Leni [432]

Answer with Step-by-step explanation:

We are given that

Height of radio tower =650 ft

From figure

AB=650 ft

BC=180 ft

We have to find the AC.

Using cosine law:

$c=\sqrt{a^2+b^2-2ab cos\alpha}$

$AC=\sqrt{(650)^2+(180)^2-2\times 650\times 180\times cos 80^{\circ}}$

$c=643.64 ft$

Hence, a guy required 643.64 ft wire when it is to connect to the tower and be secured at a point on the sloped side 180 ft from the base of the tower.

b.In a right triangle ABC, AB= $\frac{650}{2}=325 ft$

Pythagorous theorem : $(Hypotensuse)^2=(perpendicular\;side)^2+(base)^2$

Substitute the values

$(AC)^2=(AB)^2+(BC)^2$

$(AC)=\sqrt{(325)^2+(180)^2}$

$AC=371.52 ft$

Hence, the length of wire should be 371.52 ft when a second guy connect the middle of the tower and be secured at a point 180 ft from the base on the flat side by wire.