Draw a diagram and you can see that
The chord subtends an angle of 2θ, where
cosθ = 3/6
and the arc length is s = 2rθ
In a circle of radius 6cm, a chord 3cm is drawn from the centre (a) calculate the angle subtended by the chord at the centre of the circle (b) hence find the length of the minor arc cut off by the chord
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Matthew
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