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1 year ago

Please I need help with alternate exterior angles.

Mathematics

1 answer:

Julli [10]1 year ago

8 0

Answer:

Step-by-step explanation:

1) angle 5 and 8

2) perimeter = 20 + 48 +52 = 120 m

3) area = 1/2 * 20 * 48 = 480 m^2

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From a point A that is 8.20 m above level ground, the angle of elevation of the top of a building s 31 deg 20 min and the angle

Mariulka [41]

Answer:

30.11 meters ( approx )

Step-by-step explanation:

Let x be the distance of a point P ( lies on the building ) from the top of the building such that AP is perpendicular to the building and y be the distance of the building from point A, ( shown in the below diagram )

Given,

Point A is 8.20 m above level ground,

So, the height of the building = ( x + 8.20 ) meters,

Now, 1 degree = 60 minutes,

⇒ $1\text{ minute } =\frac{1}{60}\text{ degree }$

$20\text{ minutes }=\frac{20}{60}=\frac{1}{3}\text{ degree}$

$50\text{ minutes }=\frac{50}{60}=\frac{5}{6}\text{ degree}$

By the below diagram,

$tan ( 12^{\circ} 50') = \frac{8.20}{y}$

$tan(12+\frac{5}{6})^{\circ}=\frac{8.20}{y}$

$tan (\frac{77}{6})^{\circ}=\frac{8.20}{y}$

$\implies y=\frac{8.20}{tan (\frac{77}{6})^{\circ}}$

Now, again by the below diagram,

$tan (31^{\circ}20')=\frac{x}{y}$

$tan(31+\frac{1}{3})=\frac{x}{y}$

$\implies x=y\times tan(\frac{94}{3})=\frac{8.20}{tan (\frac{77}{6})^{\circ}}\times tan(\frac{94}{3})^{\circ}=21.9142943216\approx 21.91$

Hence, the height of the building = x + 8.20 = 30.11 meters (approx)

8 0

2 years ago

Find the area of this triangle.

Oxana [17]

Answer:

The area is 104

Step-by-step explanation:

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2 years ago

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-8a-9a+7a what does this equal

allochka39001 [22]

The answer would be -10a

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2 years ago

Yarins gross pay for the year $3,500 the federal income tax withholding for my pay was 9% of my gross pay yarin owes $115 federa

Len [333]

Please ensure that you've copied down this problem correctly. You speak of someone named "Yarin" but also speak of "my" and "I". Are there really two different people who "star" in this problem? Are you studying "ratios" right now?

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3 years ago

Which is the best but?

garri49 [273]

12.60 / 7 = $ 1.80 per bottle
10.98 / 6 = $ 1.83 per bottle
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2 years ago

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