Find the length of a chord which subtends an angle of 90&...
Find the length of a chord which subtends an angle of 90° at the centre of a circle whose radius is 8 cm.
8√3 cm
4 cm
8 cm
8√2 cm
Correct answer is D
Length of chord = 2rsin(θ2)
= 2×8×sin(902)
= 16×√22
= 8√2cm
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