QuestionNECOFurther Maths2023ObjectiveTrigonometryTrigonometry
NECO 2023 · Paper 1 · Q10
In a circle of radius 20 cm, find the length of an arc which subtends an angle of 1.2 radians at the centre.
Worked solution (try it first)
The angle is in radians, so the arc length is
s=rθ.
s=20×1.2=24 cm, option C.
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