﻿ Geometry Question
25 May, 2013, 12:44:49
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42vs.1337
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 « Reply #30 on: 30 June, 2011, 22:12:47 » 0

you could simply use coordianate(bash) -or to make it sound better analytical geo.
let a=0,0 b=30,0 c=0,40.
the equation of bc is y-40=-4x/3
the distance (using the point to line formula) from 0,0 is just 24!!!!!!(factorial?)
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AngelFish
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 « Reply #31 on: 30 June, 2011, 22:13:11 » 0

What the...?

EDIT: I can vaguely understand that post after spending a few minutes trying to decipher it.
 « Last Edit: 30 June, 2011, 22:14:18 by Qwerty.55 » Logged

∂²Ψ    -(2m(V(x)-E)Ψ
---  = -------------
∂x²        ℏ²Ψ
42vs.1337
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 « Reply #32 on: 30 June, 2011, 22:37:17 » -4

What the...?

EDIT: I can vaguely understand that post after spending a few minutes trying to decipher it.
http://www.intmath.com/plane-analytic-geometry/perpendicular-distance-point-line.php
that problem is actually sort of trivial .........no offense guys.
i don't know but the area olution was a very standard method if you seen it before
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t0xic_kitt3n
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 « Reply #33 on: 30 June, 2011, 22:47:20 » 0

What the...?

EDIT: I can vaguely understand that post after spending a few minutes trying to decipher it.
http://www.intmath.com/plane-analytic-geometry/perpendicular-distance-point-line.php
that problem is actually sort of trivial .........no offense guys.
i don't know but the area olution was a very standard method if you seen it before
Ummm...he's not using coordinates.

When you take the perpendicular from the base to the opposite corner, do you get two similar triangles?
 « Last Edit: 30 June, 2011, 22:52:43 by fb39ca4 » Logged

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aeTIos
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 « Reply #34 on: 01 July, 2011, 14:59:19 » 0

Hm I am actually not bad with trigonometry. You can solve it with sinus this way:
∠α = tan(40/30) ≈53.13°
sin(α) = sin(53.13°) =0.8
30*0.8 =  24 (since sin gives the ratio of the opposite side to the hypotenuse)

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