Question

Chord AB subtends angle AOB equal to 60 degree at the centre o of the circle . If OA=5 cm then find the length of AB

Answer 1

#BAL

OA=OB(both are radii of same circle)

∠OAB=∠OBA=x(say)

In ΔAOB,

∠OBA+∠OAB+∠AOB=180°

x+x+60°=180°

2x+60°=180°⇒2x=180°-60°=120°⇒x=120/2=60°

∠OAB=∠OBA=∠AOB=60°

∴ΔAOB is equilateral

AB=OA=5cm

∴AB=5cm

Answer 2

Answer:

this is a answer yo yo bro