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fgiga [73]
3 years ago
14

Which is greater 52 + (-77) or 52 - (-77)

Mathematics
1 answer:
Kay [80]3 years ago
3 0

52 + (-77) =

52 - 77 = -25

----------------------------


52 - (-77) =

52 + 77 = 129

---------------------------

your answer is: 52 - (-77)

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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
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Answer:

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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}

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\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)

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

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