Question

If the system of linear equations : $x + 3y + 7z = 0$ $-x + 4y + 7z = 0$ $(\sin 3 \theta ) x + (\cos 2 \theta) y + 2z = 0$ has a non-trivial solution, then the number of values of 6 lying in the interval $[0, \pi ]$, is :

• A. two
• B. three
• C. more than three
• D. one

Answer 1

Answer: (D)

one

Answer 2

Answer (d) one