Question

Let A (0, 0, 1), B(0, 1, 0) and C(1, 1, 1) are the points in a plane, then the equation of the plane perpendicular to plane ABC and passing through A and B is

• A. – x + y + z + 1 = 0
• B. x – y – z – 1 = 0
• C. – x + y + z – 1 = 0
• D. None of these

Answer 1

Answer: (D)

None of these

Answer 2

Let P be the variable point on the required plane

Ž $\overrightarrow { \mathrm { AP } } , \overrightarrow { \mathrm { AB } } , ( \overrightarrow { \mathrm { AB } } \times \overrightarrow { \mathrm { BC } } )$ are coplanar