2019
Mathematics
JAMB
Find the length of the chord |AB| in the diagram shown above.
A.
4.2 cm
B.
4.3 cm
C.
3.2 cm
D.
3.4 cm
Correct Answer: 3.4 cm
Explanation
Length of chord = 2rsin(θ/2) = 2(3)sin(68/2) = 6sin 34 = 6 × 0.559 = 3.354 cm ≊ 3.4 cm
Length of chord = 2rsin(θ/2) = 2(3)sin(68/2) = 6sin 34 = 6 × 0.559 = 3.354 cm ≊ 3.4 cmTHIS WEEK's
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