trigonometry (radians)

[lovely_nancy]

this is an radians question and really want help with what I have to do with the following question in order to answer it.

In a cricket match, a particular cricketer generally hits the ball anywhere in a sector of angle 100degrees. If the boundary (assumed circle is 80 yards away, find
(i) The length of boundary which the fielders should patrol
(ii) The area of the ground which the fielders need to cover.

Thanks
Nancy

 

[Deleted member 4993]

this is an radians question and really want help with what I have to do with the following question in order to answer it.

In a cricket match, a particular cricketer generally hits the ball anywhere in a sector of angle 100degrees. If the boundary (assumed circle is 80 yards away, find
(i) The length of boundary which the fielders should patrol
(ii) The area of the ground which the fielders need to cover.

Thanks
Nancy

The arc-length of the boundary S = r * ?

In your case ? = 80/180 * ? and r = 80

The area of sector = ?/2 * r[sup:3f4zd2z3]2[/sup:3f4zd2z3]