Q. If the angle between the lines represented by equations $y^{2} + kxy - x^{2}\tan^{2}A = 0$ is $2A,\$then $k$ is equal to
A) 0
B) 2
C) 4
D) $- 2$
Explanation
The correct answer is Option A: 0.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.