Question

NOSSO
(a) x2 + y2 = 8
at (2, 2)
(b) x2 + y2 = 36 at (-6,0)
(c) x2 + y2 – 3x + 10y - 15 = 0 at (4, - 11).
avo
a)
Show that the line 3x - 4y = 25 and the circle x2 + y2 = 25
intersect in two coincident points.
b) Prove that the line 5x + 12y + 78 = 0 is tangent to the circle
x² + y2 = 36.
C) Prove that the tangent to the circle x2 + y2 = 5 at the point (1, -2)
also touches the circle r2 + y2 - 8x + 6y + 20 = 0 and find the
point of contact.
DS​

Answer 1

Answer:

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