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varsha valli g. (804)

Blazing goIITian

total posts: 515
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simple ,
the eqn of the plane can be:a(x-1) +b(y+1)+c(z-2)=0-----------(1)
dot product with d.r of other planes is 0
2a+3b-2c=0
a+2b-3c=0
now solve it, u will get,
a/-5 = b/4 = c/1 =k
a=-5k , b=4k ,c=k
now substitute the values in (1)
u will get : -5x+4y +z=-7
eqn: 5x-4y-z=7
(see study material ,there are many sums like this)
hope this helps
all the best
!!!!!!!!!!!!!!!

Varsha be cool, tomorrow is what we make it today, so if u can dream it , u can make it . life is an ice cream ,eat it before it melts away!!!!!!!!!

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