NCERT Class 12-Mathematics: Chapter – 11 Three Dimensional Geometry Part 11 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 30:

If the directions cosines of a line are , then

(A)

(B)

(C)

(D)

Question 31:

The distance of the plane from the origin is

(A)

(B)

(C)

(D) None of these

Question 32:

The sine of the angle between the straight line and the plane is

(A)

(B)

(C)

(D)

Question 33:

The reflection of the point in the plane is

(A)

(B)

(C)

(D)

Question 34:

The area of the quadrilateral ABCD, where and , is equal to

(A)

(B)

(C)

(D)

Question 35:

The locus represented by is

(A) A pair of perpendicular lines

(B) A pair of parallel lines

(C) A pair of parallel planes

(D) A pair of perpendicular planes

Question 36:

The plane makes an angle with axis. The value of is equal to

(A)

(B)

(C)

(D)

Fill in the Blanks in Each of the Exercises 37 to 41

Question 37:

A plane passes through the points and . The equation of plane is ________.