Question

In the given figure, chord AB subtends ∠AOB measures 60° at the centre O of the circle. If OA is equal to

7 cm, the find the length of AB
​

Answer 1

Answer:

AB = 7CM

Step-by-step explanation:

According to the diagram

<OAB = <OBA { isosceles triangle property}

<O+<A+<B = 180 (ANGLE SUM PROPERTY)

60 + 2<A. = 180 (<A=<B)

<A= 60

<B= 60

triangle AOB IS EQILATERAL TRIANGLE because all three angles are of 60°

so all three side will be also equal

AB =OA=OB

AB = 7Cm