CircleHard
Question
From a point P tangent is drawn to the circle x2 + y2 = a2 and a tangent is drawn to x2 + y2 = b2. If these tangent are perpendicular, then locus of P is -
Options
A.x2 + y2 = a2 + b2
B.x2 + y2 = a2 − b2
C.x2 + y2 = (ab)2
D.x2 + y2 = a + b
More Circle Questions
If a be the radius of a circle which touches x-axis at the origin, then its equation is-...The greatest distance of the point P(10, 7) from the circle x2 + y2 - 4x - 2y - 20 = 0 is -...Through the vertex ′O′ of the parabola y2 = 4ax, variable chords OP and OQ are drawn at right angles. If the...The centre(s) of the circle (s) passing through the points (0, 0), (1, 0) and touching the circle x2 + y2 = 9 is/are-...The number of tangents that can be drawn from the point (8, 6) to the circle x2 + y2 _ 100 = 0 is...