Question
Question: For the hyperbola \(\frac{x^{2}}{\cos^{2}\alpha} - \frac{y^{2}}{\sin^{2}\alpha}\) = 1 which of the f...
For the hyperbola cos2αx2−sin2αy2 = 1 which of the following remains constant with change in 'a' ?
A
Abscissae of vertices
B
Abscissae of foci
C
Eccentricity
D
Directrix
Answer
Abscissae of foci
Explanation
Solution
a = cosa, b = sina Ž e = seca
x coordinate of foci 1.