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Class 12 Mathematics Trigonometric Functions AnglesHardLevel 68

If a sector has radius (9) cm and angle (80^\circ), what is the arc length?

Answer and explanation

Correct answer: (4\pi) cm

(80^\circ=\frac{4\pi}{9}) radians and (s=9\times\frac{4\pi}{9}=4\pi). In exams, convert degrees into radians first.

Tags

trigonometry angles arc length hard class11

Frequently asked questions

What is the correct answer to this question?

(4\pi) cm

Why is this the correct answer?

(80^\circ=\frac{4\pi}{9}) radians and (s=9\times\frac{4\pi}{9}=4\pi). In exams, convert degrees into radians first.

Which subject and chapter does this question cover?

This is a Class 12 Mathematics question. Chapter: Trigonometric Functions. Topic: Angles.

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