Question

in figure chord MN and chord RS intersect at point D if RD= 15,DS=4,MD=8 then find DN​

Answer 1

In figure chord MN and chord RS intersect at point D if RD= 15,DS=4,MD=8 then DN is7. 5

Given ,

RD = 15, DS = 4, MD = 8

MD × DN = RD × DS

This property is known as theorem of chords intersecting inside the circle.

⇒ 8 × DN = 15 × 4

=>DN=15/2

=>7.5