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dividing both sides by √a2+b2+c2 we get,NOTE: a2 is a square,b2 is b sqare,c2 is c sqare


It is in the form form of lX + mY+nZ=P

where l,m,n are DC'S

therefore DC'S are (3/13,4/13,12/13)

Hope it helped u mate☺
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