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)

Correct answer is (d) one