Q. 3

# Find the direction cosines of the normal to the plane y = 3.

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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Find the equation of the plane which contains the line of intersection of the planes

and

and whose intercept on the x-axis is equal to that of on y-axis.

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