The products of lengths of perpendiculars from any point of hyperbola x2 - y2 = 8 to its asymptotes, is
2
3
4
8
The equation 16x2 + y2 + 8xy - 74x - 78y + 212 = 0 represents
a circle
a parabola
an ellipse
a hyperbola
Equation of curve in polar coordinates is represents
a straight line
a parabola
a circle
an ellipse
If yk is the kth derivative of y with respect to 'x', and y = cos(sin(x)), then is equal to
D.