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JEE PYQ: Matrices And Determinants Question 80

Question 80 - 2019 (10 Jan Shift 2)

The number of values of $\theta \in (0, \pi)$ for which 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, is:

(1) three

(2) two

(3) four

(4) one

Show Answer

Answer: (2)


Learning Progress: Step 80 of 89 in this series