Question

AB is a chord of a circle having center O , if angle AOB =90degree,
prove that the chord AB is of length r root 2 , where r is the radius of circle

Answer 1

USE pythagorean theorem in triangle AOB

Answer 2

kk

Answer 3

AB^2 =r^2 +r^2
AB^2=2r^2
AB=r root2

Answer 4

got it?

Answer 5

i think should we need to draw a perpendicular