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robinfr93
Group Title
Let PQR be a right angled isosceles triangle in a cartesian plane, right angled at P(2,1). If the equation of the line QR is 2x+y = 3, then the equation representing the pair PQ and PR is..
 2 years ago
 2 years ago
robinfr93 Group Title
Let PQR be a right angled isosceles triangle in a cartesian plane, right angled at P(2,1). If the equation of the line QR is 2x+y = 3, then the equation representing the pair PQ and PR is..
 2 years ago
 2 years ago

This Question is Closed

ChmE Group TitleBest ResponseYou've already chosen the best response.0
Draw a picture first. it always helps visualize
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
Well there wasn't one but neway heres what I can do..
 2 years ago

ChmE Group TitleBest ResponseYou've already chosen the best response.0
When it says right angled at (2,1) I think at that point it is 90 deg
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
dw:1347994216890:dw
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
yes dats pretty obvious isn't it??
 2 years ago

ChmE Group TitleBest ResponseYou've already chosen the best response.0
Right angle isoceles means that the sides to each side of the right angle are equal. Ya I'd say so after the picture.
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
yup, both the angles will be 45 degrees, i.e, 45+45+90
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
well ChmE??
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
well @ChmE
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
Can't anybody solve this??
 2 years ago

bahrom7893 Group TitleBest ResponseYou've already chosen the best response.0
Ok let me try.
 2 years ago

bahrom7893 Group TitleBest ResponseYou've already chosen the best response.0
I want to say PQ is just x=2 and PR is just y=1, but what if the triangle is at an angle..
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
just find points Q and R, given that we know P
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
then use point slope and all that business
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
Its an isosceles right angled triangle that means 2 of its angle are 45 degrees and one is at 90 degrees..
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
@TuringTest the question is HOW???
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
let's draw a bigger pic
 2 years ago

bahrom7893 Group TitleBest ResponseYou've already chosen the best response.0
dw:1347994331965:dw
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
btw the answers ae PQ = x+3y 5 and PR = 3xy5
 2 years ago

bahrom7893 Group TitleBest ResponseYou've already chosen the best response.0
lol does that help?
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
@bahrom7893 No dude!!! Its already in the question... :P
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
dw:1347994441088:dw
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
Yeah now what??
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
I got it so far!!! next step will be what??
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
at x=2 what is y ?
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
calm down dude I am explaining...
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
:P Sorry its just that its getting in my head bad!!
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
well all that is given in the ques, no additionally details are provided..
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
though I must admit I;m not sure exactly what they are asking the equation for the pair? what do they mean?
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
hahhahahahah.. Exactly what Ive stumbled upon..
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
by pair of lines they mean PQ and PR
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
but infinitely I assume, not a finite line segment....
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
nope its finite alright!!!
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
then the answer must give bounds to x and y
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
Look will it help if I write the solution down, The thing is Ive got the solution but I don't really understand it very well...
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
dw:1347994766490:dw
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
yeah that may help me understand what they are asking
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
The equations of PQ and Pr are... y2 = [2 /+ tan 45/1+/ (2)tan 45] * (x2) <=> HOW??? Solving this they Got PQ ad PR...
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
oh I misinterpreted the problem I see
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
dw:1347994998473:dwso my assumption that the legs of the triangle followed the grid was wrong
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
@TuringTest Still don't get...
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
well now the problem is harder than I thought, so let me think on it I was eating lunch as I was doing this because I thought it would be easy lol
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
:P well it isn't @hartnn DUDE!!! You were saying u got it ryt?? Will you do the honor of telling me how??
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
even i thought that lines are vertical and horizontal.....but they r not.....even i m stuck...
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
that seems the formula for tan(A+B) ....in the solution u mentioned....do u have some standard formulas in this topic ?
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
I know!!! just one , but I don't understand hw to implement it in this one..
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
Two lines will be perpendicular to each other if...coeff of x^2 + coeff of y^2 = 0
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
but this is a first degreeequation so can't really put that in...
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
yes, that won't help..
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
Think people THINK!!!! The person who can solve this will be titled a born genius.. :P
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
dw:1347995522447:dw
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.1
I dunno I'll have to drop this for now...
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
NOOOOOOOOOOOOOOOOOOOOOOOOOOO!!!! :'(
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
dw:1347995617810:dw i don't know what i m doing......
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
6 equations 8 unknowns.
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
mM=1>7th equation.
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
1 more equation and we are done.
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
you mean one more equation if was provided??
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
1 more equation WE need to find.
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
Take all the time you need, Ill be here for a while....
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
lol, very big equation it is!! PQ=PR and distance formula :P
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
we getting 8 equations and 8 unknowns but its almost impossible to solve them simultaneously.....there must be another way...
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
I typed in the equation and the solution that was given in the text.. The only questions bugging my mind is Y and HOW??
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
and even how y2 and x2 ?? y2 and x1 maybe.....
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
we can use help of @ganeshie8 here....
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
Is he any good??
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
you will see.
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
do u have formulas like this somewhere ? \(\huge yy_1=\frac{m_1\pm m_2}{1\mp m_1m_2}(xx_1)\) with this u directly get to answer..............
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
m1 is slope of given line = 2 m2 is slope between lines = tan 45 .............
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.1
dw:1347997360648:dw
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.1
im trying to work this out by finding out inclination angles for the two lines PR and PQ
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.1
since we have a point P(1, 2 ) already, we just need to find the inclination angle
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.1
dw:1347997747693:dw
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
nice hint @ganeshie8 , i have some idea now....
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
inclination angles easy to find.........
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.1
no this is roundabout way... im sure using ur formula we get to the answer much faste.r...
 2 years ago

robinfr93 Group TitleBest ResponseYou've already chosen the best response.0
can someone just elucidate what or how I can solve the problem??
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
dw:1347997933295:dw
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
did u get that figure ? @robinfr93
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
dw:1347998406604:dw solved!
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
main thing was to find slope of one of the line = 3 using inclination angles....
 2 years ago
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