Question:medium
If \( \theta \) is the angle between the pair of straight lines \( x^2 - 5xy + 4y^2 + 3x - 4 = 0 \), then \( \tan^2\theta \) is equal to
If \( \theta \) is the angle between the pair of straight lines \( x^2 - 5xy + 4y^2 + 3x - 4 = 0 \), then \( \tan^2\theta \) is equal to
Show Hint
Always convert \(xy\) coefficient into \(2h\) form before applying formulas.
Updated On: May 1, 2026
- \( \frac{9}{16} \)
- \( \frac{16}{25} \)
- \( \frac{9}{25} \)
- \( \frac{21}{25} \)
- \( \frac{25}{9} \)
Show Solution
The Correct Option is C
Solution and Explanation
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