How do I solve this math question?

puqdew

Banned
Jun 22, 2009
192
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0
Alright imagine a triangle with the following points

A (1,2)
B (3,8)
C (7, 4)

Now let's assume that triangle is the Bermuda Triangle. Each unit represents 100km.

Now a fighter jet has to fly from point (4,8) in a straight line to the origin (0,0).

If it flies at 200km/h, how long would the duration be that it would be flying over the triangle?

All help appreciated!
Thanks
 

WraithETC

Golden Member
May 15, 2005
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I put my hands on your hips when I dip, you dip, we dip. You put your hands on my hips when you dip, I dip, we dip.

uh huh
 

Chronoshock

Diamond Member
Jul 6, 2004
4,860
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Infinite. His compass would start spinning as he approached the centroid, rendering navigation useless. He will hit heavy turbulence and a strange glow in the cloud. The flight will then stall out and crash into the ocean.
 

puqdew

Banned
Jun 22, 2009
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Originally posted by: SunnyD
uh, duh. Right triangle from 0,0 to 4,8.

Read carefully...I dont need the distance from 4,8 to 0,0.

I need to solve how long it will be flying in the triangle.
 

OCGuy

Lifer
Jul 12, 2000
27,224
36
91
Originally posted by: WraithETC
I put my hands on your hips when I dip, you dip, we dip. You put your hands on my hips when you dip, I dip, we dip.

uh huh

troof
 

z1ggy

Lifer
May 17, 2008
10,009
65
91
Have you drawn it out on paper yet? That may help you visualize it better. Giving you the answer isn't going to help you at all. You know the distance formula at all? That will help you.
 

SunnyD

Belgian Waffler
Jan 2, 2001
32,674
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www.neftastic.com
Originally posted by: puqdew
Originally posted by: SunnyD
uh, duh. Right triangle from 0,0 to 4,8.

Read carefully...I dont need the distance from 4,8 to 0,0.

I need to solve how long it will be flying in the triangle.

What, do you actually want me to do your homework for you? It's obvious.
 

marketsons1985

Platinum Member
Apr 15, 2000
2,090
0
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Originally posted by: puqdew
Originally posted by: SunnyD
uh, duh. Right triangle from 0,0 to 4,8.

Read carefully...I dont need the distance from 4,8 to 0,0.

I need to solve how long it will be flying in the triangle.

So what you need it to draw the triangle, and draw the line that goes from 0,0 to 4,8. Then find where those two intersect (i.e. find the point) and then find the distance from 4,8 to that point. Use that distance to find time.
 

z1ggy

Lifer
May 17, 2008
10,009
65
91
Originally posted by: Chronoshock
Infinite. His compass would start spinning as he approached the centroid, rendering navigation useless. He will hit heavy turbulence and a strange glow in the cloud. The flight will then stall out and he will disappear into thin air.

Fixed.

 

RapidSnail

Diamond Member
Apr 28, 2006
4,257
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1) Find distance (0,0 to 4,8) by Pythagoras.
2) Find the points of intersection with the triangle.
3) Calculate distance again.
4) t = d/r
 

JohnCU

Banned
Dec 9, 2000
16,528
4
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Originally posted by: RapidSnail
1) Find distance (0,0 to 4,8) by Pythagoras.
2) Find the points of intersection with the triangle.
3) Calculate distance again.
4) t = d/r
5) ...
6) profit!

 

DrPizza

Administrator Elite Member Goat Whisperer
Mar 5, 2001
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Holy shit, that's a hard problem. You do know that the earth is, more or less, spherical, don't you? So, what do you mean by a straight line? Through the earth?! Ouch!
A straight line is going to be an arc. Wow, what grade level are you in? That's a really really hard problem!
 

FleshLight

Diamond Member
Mar 18, 2004
6,883
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Originally posted by: DrPizza
Holy shit, that's a hard problem. You do know that the earth is, more or less, spherical, don't you? So, what do you mean by a straight line? Through the earth?! Ouch!
A straight line is going to be an arc. Wow, what grade level are you in? That's a really really hard problem!

Truth. We need the altitude of the plane and the projected coordinate system you are using.
 

Cattlegod

Diamond Member
May 22, 2001
8,687
1
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Originally posted by: FleshLight
Originally posted by: DrPizza
Holy shit, that's a hard problem. You do know that the earth is, more or less, spherical, don't you? So, what do you mean by a straight line? Through the earth?! Ouch!
A straight line is going to be an arc. Wow, what grade level are you in? That's a really really hard problem!

Truth. We need the altitude of the plane and the projected coordinate system you are using.

not to mention starting height, because we could make it efficient and fly in a straight line still if it started high enough.

Also need starting speed and type of plane so we can determine how long it takes to get up to cruising speed. if it is a 1940's prop plane and starting at 40,000 feet, they guy may freeze to death and thus never make it to the destination.
 

BillGates

Diamond Member
Nov 30, 2001
7,388
2
81
Fighter jets always fly in mph, not kph, because they're badass.

(that's the answer that'll get you extra credit)
 

rgwalt

Diamond Member
Apr 22, 2000
7,393
0
0
Originally posted by: DrPizza
Holy shit, that's a hard problem. You do know that the earth is, more or less, spherical, don't you? So, what do you mean by a straight line? Through the earth?! Ouch!
A straight line is going to be an arc. Wow, what grade level are you in? That's a really really hard problem!

If it weren't for the nasty curvature of the earth, he could find the points where the jet intersects the Bermuda triangle by solving two systems of linear equations. With the intersection points, he could apply the pythagorian theorem to find the length of the flight path in the triangle (some would call this the distance formula, but I prefer to remember fewer equations and to generalize as necessary).

 

Cogman

Lifer
Sep 19, 2000
10,283
134
106
Originally posted by: Cattlegod
Originally posted by: FleshLight
Originally posted by: DrPizza
Holy shit, that's a hard problem. You do know that the earth is, more or less, spherical, don't you? So, what do you mean by a straight line? Through the earth?! Ouch!
A straight line is going to be an arc. Wow, what grade level are you in? That's a really really hard problem!

Truth. We need the altitude of the plane and the projected coordinate system you are using.

not to mention starting height, because we could make it efficient and fly in a straight line still if it started high enough.

Also need starting speed and type of plane so we can determine how long it takes to get up to cruising speed. if it is a 1940's prop plane and starting at 40,000 feet, they guy may freeze to death and thus never make it to the destination.

Don't forget, air friction, cross winds, the fact that he is burning fuel (So the plane gets lighter as he flies). Also, you can't forget tidel differences, and the fact that the position of the moon and sun can change the amount of energy expended on the trip.

It looks like you'll have to break out some Calc 2 to get this problem, its the only way to be sure.

I suggest looking into triple integrals, the gravitational constant, and maximizing equations. Good luck.