If the line of intersection of the planes \( a x+b y=3 \) and \( a x+b y+c z=0, a>0 \) makes ... VIDEO
If the line of intersection of the planes \( a x+b y=3 \) and \( a x+b y+c z=0, a>0 \) makes an angle \( 30^{\circ} \) with the plane \( y-z+2=0 \) then the direction cosines of the line are
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