AP EAMCET · Maths · Functions
If \(\Delta=\left|\begin{array}{ccc}1 & \cos \theta & 1 \\ -\cos \theta & 1 & \cos \theta \\ -1 & -\cos \theta & 1\end{array}\right|\), then \(\Delta\) lies in the interval
- A [2, 4]
- B (2, 4)
- C [1, 4]
- D [– 1, 1]
Answer & Solution
Correct Answer
(A) [2, 4]
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Detailed explanation
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