Mathematics Mania.

wicky_ts

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Jun 2, 2009
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VSGM said:
oge8oy.jpg


is the question correct, pls show me the method to do this!!
May be this is a late reply,
When you mark point S as angle PQR = angle SPR you will get two similar triangles (samarupi)

PQR and PRS
because angle PRS = angle PRQ
angle PQS = angle SPR
Then ratio between sides will be equal
PR/RS = QR/PR
then
PR² = QR. RS
 
Last edited:

dammamuditha

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Sep 8, 2008
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VSGM said:
oge8oy.jpg


is the question correct, pls show me the method to do this!!

if s is a point in QR then we will have 2 equilateral triangles, PQR and PRS.
Then we can write PR/SR = QR/PR
then PR^2 = RS.QR
 

wicky_ts

Member
Jun 2, 2009
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dammamuditha said:
if s is a point in QR then we will have 2 equilateral triangles, PQR and PRS.
Then we can write PR/SR = QR/PR
then PR^2 = RS.QR
How can you get 2 equilateral triangles. Then each angle is 60 degrees. That will be a very special case. Here it is clearly marked the angles are different in value.
 

tushi81

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  • Jan 17, 2009
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    wicky_ts said:
    How can you get 2 equilateral triangles. Then each angle is 60 degrees. That will be a very special case. Here it is clearly marked the angles are different in value.
    are u doing A/L?
     

    the_myth

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  • Apr 15, 2009
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    Physics(A/L)[basic question]


    A train travels on a 25:1 ratio linear slope at velocity of 18kmh^-1.The mass of the train is 50metric tons.The friction of the slope is 1N for 80metric tons.Then what is the acceleration of the train.
     

    djHiran

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  • Oct 6, 2006
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    Challange: define the null graph using set theory!

    According to definition of a graph G = (V,E) where V is the set of vertices and E is the set of edges.

    Considering the uniqueness of null element can you define the null graph?
     

    the_myth

    Well-known member
  • Apr 15, 2009
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    djHiran said:
    Challange: define the null graph using set theory!

    According to definition of a graph G = (V,E) where V is the set of vertices and E is the set of edges.

    Considering the uniqueness of null element can you define the null graph?

    Nice one keep it up.