Q4 of 25 Page 3

Find the length of an arc of radius 5 cm subtending a central angle of 15°.

Let “l” be the length of the arc subtending angle θ at centre of circle of radius “r”.


Then,



Now,




For the given values,




More from this chapter

All 25 →
2

Find the radian measure of 75°.

 3

Evaluate .

 5

Express 2 sin 3x cos x as the sum or difference of sines and cosines.

 6

A wheel makes 360 revolutions in one minute. Through how many radians does it turn in one second?