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Jan 11 2023 08:27pm
Quote (RollOneUp @ Jan 11 2023 04:17pm)
A plane is approaching a 7500 m runway. The angles of depression to the ends of a runway are 9 and 16 degrees. How far is the plane from each end of the runway? Show all work for full marks.


also this one ^pixi31415
have about an hour left on the exam timer, would really appreciate this


This one’s ass to type out. It’s really similar to the guy wire problem except upside down.

Let me know if you still have time.
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Jan 11 2023 09:04pm
Quote (brigadier @ Jan 11 2023 09:22pm)
You exam is probably over but it sounds like just SOH CAH TOA.

Draw a right triangle using the points (-3,5) and base of the x axis.

You’ll notice the base has “length” -3

Height 5

And you can find the hypotenuse by using the Pythagorean theorem.

(-3)^2 + (5)^2 = c^2.

9 + 25 = c^2

34 = c^2

Sqrt 34 = c. Now label your triangle



Sin theta = 5/ sqrt 34. Most instructors will want you to rationalize your denominator. This means no sqrt in the bottom of the fraction. Multiple your fraction by sqrt34 / sqrt34

Sin theta = (5 sqrt 34) / 34

Cos theta = -3/ sqrt 34
= (-3 sqrt 34)/ 34

Tan theta = 5/-3


it is done, and saw pixie was active like 10 mins before i posted but he never came back, you were like 10 hours inactive so didn’t try :p but i appreciate it ! I had something similar so we will see :D maybe partial marks
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Jan 11 2023 09:06pm
Quote (brigadier @ Jan 11 2023 09:27pm)
This one’s ass to type out. It’s really similar to the guy wire problem except upside down.

Let me know if you still have time.


thank you either way :) i submitted what i could, tried to refer to that one also during this, any exam review they gave, had it where it would be a 90degree angle and was finally under standing it, then this one , based on the picture wasn’t 90 degrees where the plane was to the landing so had me confused lol

This post was edited by RollOneUp on Jan 11 2023 09:07pm
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Jan 12 2023 02:04am
sry, your daytime is in the middle of my night :zzz:
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