Q. 365.0( 2 Votes )

The plane 2x – 3y + 6z – 11 = 0 makes an angle sin–1(α) with x-axis. The valueof α is equal to
A.

B.

C.

D.

Answer :

Given equation of plane is 2x – 3y + 6z = 11


Normal to this plane is,



Also,


x-axis has direction vector



Also, we know the angle ϕ between the line with direction vector b and the plane with normal vector n is






On comparison,


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