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Answered

the length of the arc of a circle is 7 cm.find the angle (in degree and radians) it makes at the center of a circle if the radius is 3.491 cm .

Sagot :

Cheahjimmyviz
using the formula        ^          l   =  rФ
                                                   l = length of arc;  r =  radius &      Ф  = degree in radian
thus
             7 = 3.491Ф
             Ф =  7/3.491 =  2.005 radians
       π radian  =  180⁰
       2.005 radian ~    180/π * 2.005  ~   114.863⁰