Question

a chord of a circle subtended a right angled at its centre find the length of the chord​

Answer 1

Answer:

Let r be the radius of the circle and θ be the angle subtended by the chord at the center.

Given: r=10 cm, θ=90o

Length of the chord = 2rsin2θ

=2×10sin2900

=20×sin45o

=20×21=102≈14.14 cm

Step-by-step explanation:

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