Question
Tue January 15, 2013 By: Kashif

the angles of a triangle are in AP and no. of degrees in the least angle is to no. of degrees in the mean angle as 1:120 find the angle in radians

Expert Reply
Wed January 16, 2013
let the angles are a-d,a,a+d.
so a-d+a+a+d=180 degree
    3a=180 degree
a=60 degree
given that  a-d/a=1/120
(60-d)/60=1/120
    120-2d=1
d=119/2
so angles in radians will bve
60-119/2=1/2 degree,60degree,60+119/2 =239/2 degree
in radians anlgles will be
pi/360,pi/3,239pi/360
 
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