Question

Consider two planes a_(1)x+b_(1)y+c_(1)z+d_(1)=0 and a_(2)x+b_(2)y+c_(2)z+d_(2)=0 where both d(1) and d_(2) are positive (origin lies on same side of both planes).Then the direction cosines of their normals are​

Answer 1

Answer:

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