Question

If
AB & CD are
two chords of the
circle
intersecting each other at
right angle
at P and if R is
centre of circle then prove
that
PA + PB + PC +
PD = 2 PR
the
(by vectors)​

Answer 1

Step-by-step explanation:

CAO = ∠ODB = x [angles in same segment ] ---- (i)

   Now, in right angled ΔDOB ,

∠ODB + ∠DOB + ∠OBD = 180°

⇒ x + 90° + y =180° (using equation  i)

⇒ x + y = 90°

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Answer 2

Answer:

Open the image

Step-by-step explanation:

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