3 years ago

An astronomer knows the distances from herself to stars A and B as well as the distance between them.

1 answer:

7 0

Answer:

see attachement

Step-by-step explanation:

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Molodets [167]

Step-by-step explanation:

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2 years ago

miv72 [106K]

2/16=1/8 = 0.125 12.5%

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2 years ago

defon

A= 1 b= -4.
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2 years ago

elena55 [62]

There are 12 inches in one foot. 120 x 12 = 1,440 inches. The correct ratio to be placed is the 5th one (aka 12 inches over 1 foot).

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2 years ago

Brrunno [24]

Step-by-step explanation:

Given that,

The length of a ladder, H = 20 feet

The height of the wall, h = 15 ft

We know that,

$\sin\theta=\dfrac{h}{H}$

h is perpendicular and H is hypotenuse

So,

$\sin\theta=\dfrac{15}{20}\\\\\theta=\sin^{-1}(\dfrac{15}{20})\\\\\theta=48.59^{\circ}$

Now using Pythagoras theoerm,

$b=\sqrt{H^2-h^2}\\\\b=\sqrt{20^2-15^2}\\\\b=13.2\ ft$

Hence, the angle made by the ladder and the ground is 48.59° and the ladder is 13.2 feet from the wall on the ground.

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2 years ago