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Question: Answered & Verified by Expert
If $\alpha, \beta$ are the eccentric angles of the extremities of a focal chord (other than the major axis) of the ellipse $x^2+4 y^2=4$ then $\sqrt{3} \cos \frac{\alpha+\beta}{2}=$
MathematicsEllipseAP EAMCETAP EAMCET 2018 (24 Apr Shift 2)
Options:
  • A $2 \cos \frac{\alpha-\beta}{2}$
  • B $2 \sin \frac{\alpha-\beta}{2}$
  • C $2 \sec \frac{\alpha+\beta}{2}$
  • D $2 \sin \frac{\alpha+\beta}{2}$
Solution:
2758 Upvotes Verified Answer
The correct answer is: $2 \cos \frac{\alpha-\beta}{2}$
No solution. Refer to answer key.

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