AT is a tangent to the circle with centre O such that OT=4cm and angle OTA=30°. Then AT is equal to

AT is a tangent to the circle with centre O such that OT=4cm and angle

1.	AT is a tangent to the circle with centre O such that OT=4cm and angle OTA=30°. Then AT is equal to
Answer» 2 root 3 ans h How? 5 cm