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3 years ago

Graph the linear equation 12x-3y=21

Mathematics

1 answer:

Elina [12.6K]3 years ago

6 0

Here is my working of the problem.

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2 years ago

A cyclic quadrilateral is shown. x:y=3:7. work out the size of angle z

LekaFEV [45]

Answer:

116 degrees

Step-by-step explanation:

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3 years ago

Ik it seems easy but can someone help

White raven [17]

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3 years ago

Write the following tepeating decmial 0.35 as a fraction

Mila [183]

Answer:

0.35 is equal to 7/20

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3 years ago

Read 2 more answers

A person on a runway sees a plane approaching. The angle of elevation from the runway to the plane is 11.1° . The altitude of th

Gnoma [55]

Answer:

The horizontal distance from the plane to the person on the runway is 20408.16 ft.

Step-by-step explanation:

Consider the figure below,

Where AB represent altitude of the plane is 4000 ft above the ground , C represents the runner. The angle of elevation from the runway to the plane is 11.1°

BC is the horizontal distance from the plane to the person on the runway.

We have to find distance BC,

Using trigonometric ratio,

$\tan\theta=\frac{Perpendicular}{base}$

Here, $\theta=11.1^{\circ}$ ,Perpendicular AB = 4000

$\tan\theta=\frac{AB}{BC}$

$\tan 11.1^{\circ} =\frac{4000}{BC}$

Solving for BC, we get,

$BC=\frac{4000}{\tan 11.1^{\circ} }$

$BC=\frac{4000}{0.196}$ (approx)

$BC=20408.16$ (approx)

Thus, the horizontal distance from the plane to the person on the runway is 20408.16 ft

8 0

3 years ago