Question

9.) In a figure shown, two concentric circles in
which AB is a chord of big circle, which is a
tangent of smaller circle, then
1) AB is trisected at P
CA
02
2) AB is bisected at P
3) AP = 2PB
A
B
P
4) AP: PB = 1:4​

Answer 1

Answer:

O is the common centre of two concentric circles. Line PQ is the tangent to the smaller circle at R.

Draw seg OR.

OR is the radius of smaller circle and PQ is a tangent to the circle at point R.

∴ seg OR⊥ line PQ.

Now, seg PQ is a chord of larger circle and OR is perpendicular to it.

We know that, a perpendicular from the centre of a circle to any of its chord, bisects the chord.

∴PR=RQ

∴R is the midpoint of seg PQ.

Answer 2

Answer:

find the zeroes of given polynomial x3-3x2