Answer :

Given :


Equation of plane : y = 3


To Find : Direction cosines of the normal i.e.


Formula :


1) Direction cosines :


If a, b & c are direction ratios of the vector then its direction cosines are given by





Answer :


For the given equation of plane


y = 3


Direction ratios of normal vector are (0, 1, 0)





= 1


Therefore, direction cosines are






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