Engineering Board Exam Reviewer · Angles and Angle Measurement · hard
The angle subtended by an arc is 15 arcminutes. If the radius of the circle is 60 cm, find the length of the arc.
- 0.262 cm
- 0.157 cm
- 0.393 cm
- 0.524 cm
Answer
A. 0.262 cm
Solution
15' = 0.25° = 0.25×π/180 0.004363 rad. s=r =60(0.004363) 0.262 cm.
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