If chord PQ of a circle have length equal to the radius then the
distance of chord from centre in terms of radius is
Answers
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Step-by-step explanation:
Given-
PQ is a chord of a circle with centre O such that OP = OQ = r = PQ when r is the radius of the circle.
To find out h = ON , the distance of PQ from O
Solution-
∆OPQ is equilateral since all its sides = r
Now height of an equilateral triangle with side= a
is √3/2a and it bisects the base at right angle.
Here a= r
= The height = ON = h = √3/2r
But ON is the distance of the chord PQ from O since the perpendicular distance of a chord from the centre bisects the chord at right angle.
So, h = ON = √3/2r is the distance of the chord PQ from O.
Ans- √3/2r
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