`A B C` is a triangle with `B` as right angle, `A C=5\ c m\ a n d\ A B=4\ c mdot` A circle is drawn with `A` as centre and `A C` as radius. The length of the chord of this circle passing through `C\ a n d\ B` is 3 cm (b) 4 cm (c) 5 cm (d) 6 cm
In right , `/_\ABC,/_B=90^0`
`AC=5cm,AB=4cm`
`BC^2=AC^2-AB^2`
`5^2-4^2=25-16=9`
`BC^2=9,BC=3 cm`
Length of chord,`BC=3 cm`

Explanation

In right , `/_\ABC,/_B=90^0`
`AC=5cm,AB=4cm`
`BC^2=AC^2-AB^2`
`5^2-4^2=25-16=9`
`BC^2=9,BC=3 cm`
Length of chord,`BC=3 cm`