In a circle, the central angle is (\frac{2\pi}{3}) and the arc length is (10\pi) cm. What is the radius?
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Answer and explanation
Correct answer: (15) cm
(s=r\theta), so (r=\frac{10\pi}{\frac{2\pi}{3}}=15). In exams, multiply by the reciprocal while dividing by a fraction.
Frequently asked questions
What is the correct answer to this question?
(15) cm
Why is this the correct answer?
(s=r\theta), so (r=\frac{10\pi}{\frac{2\pi}{3}}=15). In exams, multiply by the reciprocal while dividing by a fraction.
Which subject and chapter does this question cover?
This is a Class 12 Mathematics question. Chapter: Trigonometric Functions. Topic: Angles.
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