Question

find the value of the angle subtended by an arc of 15 m long at the centre of radius 30 m in radians and degrees.​

Answer 1

Answer:

radius =30m

so circumference=60pi m

now

60pi m subtend an angle of 2pi rad at centre.

so 1m will sub 1/30 rad at centre .

so 15 m will subtend 1/30×15 rad angle

= .5 rad angle.

now you can conver it into degree