Question

When lenght of a chord of a circle is 9cm and its opposite angle is 80°, find the radius of the circle?
Please help me yaarr fastly​

Answer 1

Answer:

ANSWER:

Let AB be a chord of a circle with centre O and radius 8 cm such that

AB = 12 cm

We draw and join OA.

Since, the perpendicular from the centre of a circle to a chord bisects the chord.

Now in we have

Hence the distance of chord from the centre .